function tick()
    printf( "tick @ %i", game.time() )
end

function tick_nil()
    printf( "tick_nil @ %i", game.time() )
end

function tick_act()
    printf( "tick_act @ %i", game.time() )
    local event
    local thread = {}
    local now = game.time()
    for event in db.storage[db.storage[db.actor:id()].timed_events do
        if event.time <= now then
            local index = #thread+1
            local thread[index] = coroutine.create( event.func )
            coroutine.resume( thread[index], unpack( event.args ) )
            event = nil
        end
    end
    if #(db.storage[db.storage[db.actor:id()].timed_events) == 0 then
        tick = tick_nil()
    end
    printf( "tick_act @ %i completed", game.time() )
end

function register_event( atime, afunc, ... )
    printf( "register_event @ %i completed", game.time() )

    if tick == tick_nil then tick = tick_act end

    eventc = #(db.storage[db.storage[db.actor:id()].timed_events)

    db.storage[db.storage[db.actor:id()].timed_events[eventc+1] =
        { time = atime, func = afunc, args = { ... } }

    printf( "register_event @ %i completed", game.time() )
end