if (chunk_amount/2 > 0)
    {
        // The draining delay doesn't have a start action, and we only need
        // the continue/finish messages if it takes longer than 1 turn.
        start_delay( DELAY_FEED_VAMPIRE, chunk_amount/2,
                     (int) invent, slot );
    }

    // The draining delay doesn't have a start action, and we only need
    // the continue/finish messages if it takes longer than 1 turn.
    start_delay( DELAY_FEED_VAMPIRE, chunk_amount/2,
                 (int) invent, slot );