C++ (Cpp) Monster::decrease_hp示例

//drain: Do drain hit points from player schtick
void drain()
{
    Monster* monster;
    int cnt;
    struct Room *room;
    Monster **dp;
    bool in_passage;
    Monster *drainee[40];

    //First count how many things we need to spread the hit points among
    cnt = 0;
    if (game->level().get_tile(game->hero().position()) == DOOR)
        room = game->level().get_passage(game->hero().position());
    else room = NULL;
    in_passage = game->hero().room()->is_gone();
    dp = drainee;
    for (auto it = game->level().monsters.begin(); it != game->level().monsters.end(); ++it) {
        monster = *it;
        if (monster->room() == game->hero().room() || monster->room() == room ||
            (in_passage && game->level().get_tile(monster->position()) == DOOR && game->level().get_passage(monster->position()) == game->hero().room())) {
            *dp++ = monster;
        }
    }
    if ((cnt = dp - drainee) == 0) {
        msg("you have a tingling feeling");
        return;
    }
    *dp = NULL;
    cnt = game->hero().drain_hp() / cnt + 1;
    //Now zot all of the monsters
    for (dp = drainee; *dp; dp++)
    {
        monster = *dp;
        if (!monster->decrease_hp(cnt, true))
            killed_by_hero(monster, game->hero().can_see_monster(monster));
        else
            monster->start_run();
    }
}