cotton

local function selectItem(name)
    for i = 1,16,1 do
        local item = turtle.getItemDetail(i)
        if item ~= nil then
            if item["name"] == name then
                turtle.select(i)
                return
            end
        else
            print("no cotton to plant")
        end
    end
end


local function harvest()
    planted, block = turtle.inspectDown()
    if planted then
        if block["state"]["age"] == 3 then
            turtle.digDown()
            selectItem("harvestcraft:cottonitem")
            turtle.placeDown()
        end
    else
        selectItem("harvestcraft:cottonitem")
        turtle.placeDown()
    end
end


local function row(cols)
    for x = 1,cols-1,1 do
        turtle.forward()
        harvest()
    end
end

local function harvestField(width,height)

    turtle.forward()
    harvest()
    for y = 1,(width/2)-1,1 do
        row(height)
        turtle.turnRight()
        turtle.forward()
        turtle.turnRight()
        harvest()
        row(height)
        turtle.turnLeft()
        turtle.forward()
        turtle.turnLeft()
        harvest()
    end
    row(height)
    turtle.turnRight()
    turtle.forward()
    turtle.turnRight()
    harvest()
    row(height)

    turtle.forward()
    turtle.turnRight()
    for y = 1,width-1,1 do
        turtle.forward()
    end
    --turtle.turnRight()
end

local function relocate()
    running = true
    prevOnRail = false
    while running do
        onRail,railType = turtle.inspectUp()
        if onRail then
            if railType["name"] == "minecraft:wooden_slab" then
                if prevOnRail then
                    turtle.forward()
                else
                    turtle.turnRight()
                end
            end
            if railType["name"] == "minecraft:log" then
                turtle.turnRight()
                turtle.forward()
            end
            if railType["name"] == "minecraft:planks" then
                running = false
            end
        else
            turtle.forward()
        end
        prevOnRail = onRail
    end
    running = true
    while running do
        turtle.turnRight()
        cum,frontBlock = turtle.inspect()
        if frontBlock["name"] == "minecraft:chest" then
            running = false
            turtle.turnRight()
        end
    end
    turtle.turnRight()
end



counter = 0
local X,Y = ...
relocate()
print("ready")
while true do
    sleep(0.5)
    --if redstone.getInput("top") then
    if counter%600==0 then

        while turtle.getFuelLevel() < 400+X*(Y+1) do
            turtle.select(16)
            if turtle.suckDown() == false then
                print("no fuel")
                read()
            end
            turtle.refuel(8)
            turtle.dropDown(64)
        end
        turtle.select(1)
        harvestField(X,Y)
        turtle.turnLeft()
        for cum = 1,16,1 do
            selectItem("harvestcraft:cottonitem")
            turtle.drop(64)
        end
        turtle.select(1)
        turtle.suck()
        turtle.turnLeft()
        turtle.turnLeft()
    end
    print(counter)
    counter = counter + 1
end