void    event_light_change( object ob, int delta )
{
    mixed  *bit;
    int     i;

    bit = (mixed *)this_object()->query_actions( "light_change" );
    for( i = 0; i < sizeof( bit ); i += 2 )
	call_other( bit[ i + 1 ][ 0 ], bit[ i + 1 ][ 1 ], ob, delta );
}