Function untransform

crawl-ref/source/transform.cc:2193–2336

* End the player's transformation and return them to having no * form. * @param skip_move If true, skip any move that was in progress before * the transformation ended. * @param scale_hp Whether keep the player's HP percentage the same if * their max HP changes. (Should be false for * talisman-related shapeshifting,

 *                       entering a new form, what form is that?
 */
void untransform(bool skip_move, bool scale_hp, bool preserve_equipment,
                 transformation new_form)
{
    // Skip if there's nothing that needs doing.
    if (you.form == transformation::none)
        return;

    const transformation old_form = you.form;
    const bool was_flying = you.airborne();

    if (!form_can_wield(old_form))
        you.received_weapon_warning = false;

    const string message = get_form(old_form)->get_untransform_message();
    if (!message.empty())
        mprf(MSGCH_DURATION, "%s", message.c_str());

    set_form(transformation::none, 0, scale_hp);

    const int str_mod = get_form(old_form)->str_mod;
    const int dex_mod = get_form(old_form)->dex_mod;

    if (str_mod)
        notify_stat_change(STAT_STR, -str_mod, true);

    if (dex_mod)
        notify_stat_change(STAT_DEX, -dex_mod, true);

    // This will keep merfolk boots melded, if mertail is currently active.
    you.equipment.unmeld_all_equipment();

    if (old_form == transformation::fortress_crab)
        you.equipment.shift_twohander_to_slot(SLOT_OFFHAND);

    // Update regarding talisman properties, just in case we didn't actually
    // meld or unmeld anything.
    you.equipment.update();

    if (old_form == transformation::death)
    {
        _print_death_brand_changes(you.weapon(), false);
        _print_death_brand_changes(you.offhand_weapon(), false);
    }
    else if (old_form == transformation::sun_scarab)
    {
        if (monster* ember = get_solar_ember())
        {
            monster_die(*ember, KILL_RESET, NON_MONSTER);
            mprf(MSGCH_DURATION, "Your tiny sun winks out.");
        }
    }
    else if (old_form == transformation::rime_yak)
    {
        you.duration[DUR_RIME_YAK_AURA] = 0;
        end_terrain_change(TERRAIN_CHANGE_RIME_YAK);
    }
    else if (old_form == transformation::werewolf)
        you.duration[DUR_WEREFURY] = 0;