BotaniaFlowers.lua

function forward(i)
    while i > 0 do
        turtle.forward()
        i=i-1
    end
end

function pick_flower()
    if turtle.detectDown() then
        turtle.digDown()
    end
end

function pick_and_move(i)
    while i > 0 do
        if turtle.detectDown() then
            turtle.digDown()
        end
        forward(1)
        i = i-1
    end
end


function uturn_left()
    turtle.turnLeft()
    pick_and_move(1)
    turtle.turnLeft()
end

function uturn_right()
    turtle.turnRight()
    pick_and_move(1)
    turtle.turnRight()
end

function dump_flowers()
    local i

    for i=1,16,1 do
        if turtle.getItemCount(i) > 0 then
            turtle.select(i)
            turtle.dropDown()
        end
    end
    turtle.select(1)
end

function one_lap()
    local i, fuel

    turtle.up()
    forward(3)
    pick_and_move(7)
    uturn_right()
    pick_and_move(7)
    uturn_left()
    pick_and_move(7)
    uturn_right()
    pick_and_move(7)
    uturn_left()
    pick_and_move(3)
    forward(1)
    pick_and_move(3)
    uturn_right()
    pick_and_move(7)
    uturn_left()
    pick_and_move(7)
    uturn_right()
    pick_and_move(7)
    uturn_left()
    pick_and_move(7)
    turtle.turnLeft()
    turtle.turnLeft()
    pick_flower()
    forward(8)
    turtle.turnRight()
    pick_and_move(8)
    pick_flower()
    turtle.turnRight()
    turtle.back()
    turtle.back()
    turtle.down()
    dump_flowers()
    fuel = turtle.getFuelLevel()
    if fuel > 200 then
        print("Fuel: ",fuel)
    else
        print("Out of fuel")
        return
    end
end

function main()
    local fuel
    fuel = turtle.getFuelLevel()
    while fuel > 200 do
        one_lap()
        fuel = turtle.getFuelLevel()
        if fuel > 200 then
            sleep(180)
        end
    end
end

main()