Simple attacker

chestDir = "dropDown" -- drop down into e.g. a chest
print("Simple grinder turtle is working!")

function drop_all_items()
    for i = 1, 15 do
        if turtle.getItemCount(i)~=0 then
            turtle.select(i)
            turtle[chestDir]()
        end
    end

    turtle.select(1)
end


while true do -- always run the lines below
    turtle.attack()
    if turtle.getItemCount( 1 ) > 0 then
        drop_all_items()
    end

    sleep(.1) -- we are performance-friendly, the turtle waits for 0.1 second
end -- end of loop