harvestTree02

--[[
    harvestTree02.lua
    http://pastebin.com/XJi4y9Gc
    Using functions for entire script.
    Script runs from the main() statement at the end
]]--

function harvestTree()
    turtle.dig()       -- dig base of tree
    --use wood to refuel if needed
    if turtle.getFuelLevel() < 15 then
        turtle.craft()   -- craft wood to planks(1 wood, 1 planks = 15 fuel)
        turtle.refuel()  -- add 4 x 15 fuel
    end
    turtle.forward() -- go under tree
    -- Loop to climb up tree and harvest trunk and surrounding leaves
    while turtle.detectUp() do -- continue loop while block detected above
        turtle.digUp() -- Dig block above
        turtle.up()    -- Move up
        -- Inner loop to check for leaves
        for i = 1, 4 do
            if turtle.detect() then -- check if leaves in front
                turtle.dig() --Dig leaves
            end
            turtle.turnRight()
        end
    end
    -- At top of the tree. New loop to return to ground
    while not turtle.detectDown() do -- While nothing detected below
        turtle.down() -- Go down
    end
end

function main()
    os.sleep(2)   -- pause for 2 secs to allow time to press esc
    harvestTree() -- Call the harvestTree function
end

--*********************Program runs from here*****************
main()