TurtleProgramKiiw

-- os.shutdown()
os.sleep(1200)
local fieldSize = 10
local isOdd = math.ceil(fieldSize/2) ~= (fieldSize/2)
turtle.select(16)
for i = 1,fieldSize+1,1 do
    turtle.forward()
end
for j = 1,4,1 do
    os.sleep(1)
    turtle.turnLeft()
    for k = 1,fieldSize+1,1 do
        turtle.forward()
    end
    if(not turtle.compareUp()) then
        break
    end
end

-- if we need more fuel for this pass
--TODO update for odd
if (isOdd and turtle.getFuelLevel() < 2*((fieldSize * fieldSize) + 2*fieldSize)) or (turtle.getFuelLevel() < 2*((fieldSize * fieldSize) + fieldSize)) then
    turtle.select(2)
    turtle.suckUp()
    turtle.refuel()
end
turtle.select(1)
-- face outward
turtle.turnLeft()
turtle.turnLeft()
-- loop over the rows
local turnRight = true
for x = 1,fieldSize,1 do
    -- loop over the columns (except the last one)
    for y = 1,fieldSize - 1,1 do
        turtle.digDown()
        turtle.placeDown()
        turtle.forward()
    end
    -- harvest the last one
    turtle.digDown()
    turtle.placeDown()
    -- all but the last row
    if x ~= fieldSize then
        -- turn right or left and change column
        if turnRight == true then
            turtle.turnRight()
            turtle.forward()
            turtle.turnRight()
            turnRight = false
        else
            turtle.turnLeft()
            turtle.forward()
            turtle.turnLeft()
            turnRight = true
        end
    end
end

-- face the starting point
turtle.turnRight()
-- go back over the row if there was an odd size
if isOdd then
    turtle.turnRight()
    for back = 1,(fieldSize-1),1 do
        turtle.forward()
    end
    turtle.turnRight()
end
-- go back down the column
for back = 1,(fieldSize-1),1 do
    turtle.forward()
end
-- face the chest
turtle.turnLeft()
--empty everything into the chest
for slot = 2,16,1 do
    turtle.select(slot)
    -- we keep trying to dump inventory
    while turtle.getItemCount(slot) ~= 0 do
        if not turtle.drop() then
            -- if the target inventory was full, we'll try it again later
            os.sleep(10)
        end
    end
end
-- reset to the starting conditions
turtle.select(1)
-- go again in 60 minutes
os.sleep(2400)
os.reboot()