/*
* Use an object the right way.
*
* There may be a BIG problem with any "effect" that can cause "changes"
* to the inventory. For example, a "scroll of recharging" can cause
* a wand/staff to "disappear", moving the inventory up. Luckily, the
* scrolls all appear BEFORE the staffs/wands, so this is not a problem.
* But, for example, a "staff of recharging" could cause MAJOR problems.
* In such a case, it will be best to either (1) "postpone" the effect
* until the end of the function, or (2) "change" the effect, say, into
* giving a staff "negative" charges, or "turning a staff into a stick".
* It seems as though a "rod of recharging" might in fact cause problems.
* The basic problem is that the act of recharging (and destroying) an
* item causes the inducer of that action to "move", causing "o_ptr" to
* no longer point at the correct item, with horrifying results.
*/
void do_cmd_use(cmd_code code, cmd_arg args[])
{
int item = args[0].item;
object_type *o_ptr = object_from_item_idx(item);
int effect;
bool ident = FALSE, used = FALSE;
bool was_aware = object_flavor_is_aware(o_ptr);
int dir = 5;
int px = p_ptr->px, py = p_ptr->py;
int snd, boost, level;
use_type use;
int items_allowed = 0;
/* Determine how this item is used. */
if (obj_is_rod(o_ptr))
{
if (!obj_can_zap(o_ptr))
{
msg("That rod is still charging.");
return;
}
use = USE_TIMEOUT;
snd = MSG_ZAP_ROD;
items_allowed = USE_INVEN | USE_FLOOR;
}
else if (obj_is_wand(o_ptr))
{
if (!obj_has_charges(o_ptr))
{
msg("That wand has no charges.");
return;
}
use = USE_CHARGE;
snd = MSG_ZAP_ROD;
items_allowed = USE_INVEN | USE_FLOOR;
}
else if (obj_is_staff(o_ptr))
{
if (!obj_has_charges(o_ptr))
{
msg("That staff has no charges.");
return;
}
use = USE_CHARGE;
snd = MSG_USE_STAFF;
items_allowed = USE_INVEN | USE_FLOOR;
}
else if (obj_is_food(o_ptr))
{
use = USE_SINGLE;
snd = MSG_EAT;
items_allowed = USE_INVEN | USE_FLOOR;
}
else if (obj_is_potion(o_ptr))
{
use = USE_SINGLE;
snd = MSG_QUAFF;
items_allowed = USE_INVEN | USE_FLOOR;
}
else if (obj_is_scroll(o_ptr))
{
/* Check player can use scroll */
if (!player_can_read())
return;
use = USE_SINGLE;
snd = MSG_GENERIC;
items_allowed = USE_INVEN | USE_FLOOR;
}
else if (obj_is_activatable(o_ptr))
{
if (!obj_can_activate(o_ptr))
{
msg("That item is still charging.");
return;
}
use = USE_TIMEOUT;
snd = MSG_ACT_ARTIFACT;
items_allowed = USE_EQUIP;
}
else
{
msg("The item cannot be used at the moment");
}
/* Check if item is within player's reach. */
if (items_allowed == 0 || !item_is_available(item, NULL, items_allowed))
{
msg("You cannot use that item from its current location.");
return;
}
/* track the object used */
track_object(item);
/* Figure out effect to use */
effect = object_effect(o_ptr);
/* If the item requires a direction, get one (allow cancelling) */
if (obj_needs_aim(o_ptr))
dir = args[1].direction;
/* Check for use if necessary, and execute the effect */
if ((use != USE_CHARGE && use != USE_TIMEOUT) || check_devices(o_ptr))
{
int beam = beam_chance(o_ptr->tval);
/* Special message for artifacts */
if (o_ptr->artifact)
{
msgt(snd, "You activate it.");
if (o_ptr->artifact->effect_msg)
activation_message(o_ptr, o_ptr->artifact->effect_msg);
level = o_ptr->artifact->level;
}
else
{
/* Make a noise! */
sound(snd);
level = o_ptr->kind->level;
}
/* A bit of a hack to make ID work better.
-- Check for "obvious" effects beforehand. */
if (effect_obvious(effect)) object_flavor_aware(o_ptr);
/* Boost damage effects if skill > difficulty */
boost = MAX(p_ptr->state.skills[SKILL_DEVICE] - level, 0);
/* Do effect */
used = effect_do(effect, &ident, was_aware, dir, beam, boost);
/* Quit if the item wasn't used and no knowledge was gained */
if (!used && (was_aware || !ident)) return;
}
/* If the item is a null pointer or has been wiped, be done now */
if (!o_ptr || !o_ptr->kind) return;
if (ident) object_notice_effect(o_ptr);
/* Food feeds the player */
if (o_ptr->tval == TV_FOOD || o_ptr->tval == TV_POTION)
(void)set_food(p_ptr->food + o_ptr->pval[DEFAULT_PVAL]);
/* Use the turn */
p_ptr->energy_use = 100;
/* Mark as tried and redisplay */
p_ptr->notice |= (PN_COMBINE | PN_REORDER);
p_ptr->redraw |= (PR_INVEN | PR_EQUIP | PR_OBJECT);
/*
* If the player becomes aware of the item's function, then mark it as
* aware and reward the player with some experience. Otherwise, mark
* it as "tried".
*/
if (ident && !was_aware)
{
/* Object level */
int lev = o_ptr->kind->level;
object_flavor_aware(o_ptr);
if (o_ptr->tval == TV_ROD) object_notice_everything(o_ptr);
player_exp_gain(p_ptr, (lev + (p_ptr->lev / 2)) / p_ptr->lev);
p_ptr->notice |= PN_SQUELCH;
}
else if (used)
{
object_flavor_tried(o_ptr);
}
/* If there are no more of the item left, then we're done. */
if (!o_ptr->number) return;
/* Chargeables act differently to single-used items when not used up */
if (used && use == USE_CHARGE)
{
/* Use a single charge */
o_ptr->pval[DEFAULT_PVAL]--;
/* Describe charges */
if (item >= 0)
inven_item_charges(item);
else
floor_item_charges(0 - item);
}
else if (used && use == USE_TIMEOUT)
{
/* Artifacts use their own special field */
if (o_ptr->artifact)
o_ptr->timeout = randcalc(o_ptr->artifact->time, 0, RANDOMISE);
else
o_ptr->timeout += randcalc(o_ptr->kind->time, 0, RANDOMISE);
}
else if (used && use == USE_SINGLE)
{
/* Destroy a potion in the pack */
if (item >= 0)
{
inven_item_increase(item, -1);
inven_item_describe(item);
inven_item_optimize(item);
}
/* Destroy a potion on the floor */
else
{
floor_item_increase(0 - item, -1);
floor_item_describe(0 - item);
floor_item_optimize(0 - item);
}
}
/* Hack to make Glyph of Warding work properly */
if (cave->feat[py][px] == FEAT_GLYPH)
{
/* Push objects off the grid */
if (cave->o_idx[py][px]) push_object(py, px);
}
}
/* XXX Eddie should messages be adhoc all over the place? perhaps the main
* loop should check for change in inventory/wieldeds and all messages be
* printed from one place
*/
void object_notice_on_wield(object_type *o_ptr)
{
bitflag f[OF_SIZE], obvious_mask[OF_SIZE];
bool obvious = FALSE;
const slay_t *s_ptr;
flags_init(obvious_mask, OF_SIZE, OF_OBVIOUS_MASK, FLAG_END);
/* Save time of wield for later */
object_last_wield = turn;
/* Only deal with un-ID'd items */
if (object_is_known(o_ptr)) return;
/* Wear it */
object_flavor_tried(o_ptr);
if (object_add_ident_flags(o_ptr, IDENT_WORN))
object_check_for_ident(o_ptr);
if (obj_is_light(o_ptr) && ego_item_p(o_ptr))
object_notice_ego(o_ptr);
if (object_flavor_is_aware(o_ptr) && easy_know(o_ptr))
{
object_notice_everything(o_ptr);
return;
}
/* Automatically sense artifacts upon wield */
object_sense_artifact(o_ptr);
/* Note artifacts when found */
if (artifact_p(o_ptr))
history_add_artifact(o_ptr->name1, object_is_known(o_ptr), TRUE);
/* special case FA, needed at least for mages wielding gloves */
if (object_FA_would_be_obvious(o_ptr))
of_on(obvious_mask, OF_FREE_ACT);
/* Learn about obvious flags */
of_union(o_ptr->known_flags, obvious_mask);
/* Extract the flags */
object_flags(o_ptr, f);
/* Find obvious things (disregarding curses) */
flags_clear(obvious_mask, OF_SIZE, OF_CURSE_MASK, FLAG_END);
if (of_is_inter(f, obvious_mask)) obvious = TRUE;
flags_init(obvious_mask, OF_SIZE, OF_OBVIOUS_MASK, FLAG_END);
/* XXX Eddie should these next NOT call object_check_for_ident due to worries about repairing? */
/* XXX Eddie this is a small hack, but jewelry with anything noticeable really is obvious */
/* XXX Eddie learn =soulkeeping vs =bodykeeping when notice sustain_str */
if (object_is_jewelry(o_ptr))
{
/* Learn the flavor of jewelry with obvious flags */
if (EASY_LEARN && obvious)
object_flavor_aware(o_ptr);
/* Learn all flags on any aware non-artifact jewelry */
if (object_flavor_is_aware(o_ptr) && !artifact_p(o_ptr))
object_know_all_flags(o_ptr);
}
object_check_for_ident(o_ptr);
if (!obvious) return;
/* Messages */
for (s_ptr = slay_table; s_ptr->slay_flag; s_ptr++)
{
if (of_has(f, s_ptr->slay_flag) && s_ptr->brand)
{
char o_name[40];
object_desc(o_name, sizeof(o_name), o_ptr, ODESC_BASE);
msg_format("Your %s %s!", o_name, s_ptr->active_verb);
}
}
/* XXX Eddie need to add stealth here, also need to assert/double-check everything is covered */
if (of_has(f, OF_STR))
msg_format("You feel %s!", o_ptr->pval > 0 ? "stronger" : "weaker");
if (of_has(f, OF_INT))
msg_format("You feel %s!", o_ptr->pval > 0 ? "smarter" : "more stupid");
if (of_has(f, OF_WIS))
msg_format("You feel %s!", o_ptr->pval > 0 ? "wiser" : "more naive");
if (of_has(f, OF_DEX))
msg_format("You feel %s!", o_ptr->pval > 0 ? "more dextrous" : "clumsier");
if (of_has(f, OF_CON))
msg_format("You feel %s!", o_ptr->pval > 0 ? "healthier" : "sicklier");
if (of_has(f, OF_CHR))
msg_format("You feel %s!", o_ptr->pval > 0 ? "cuter" : "uglier");
if (of_has(f, OF_SPEED))
msg_format("You feel strangely %s.", o_ptr->pval > 0 ? "quick" : "sluggish");
if (flags_test(f, OF_SIZE, OF_BLOWS, OF_SHOTS, FLAG_END))
msg_format("Your hands %s", o_ptr->pval > 0 ? "tingle!" : "ache.");
if (of_has(f, OF_INFRA))
msg_format("Your eyes tingle.");
if (of_has(f, OF_LIGHT))
msg_print("It glows!");
if (of_has(f, OF_TELEPATHY))
msg_print("Your mind feels strangely sharper!");
/* WARNING -- masking f by obvious mask -- this should be at the end of this function */
flags_mask(f, OF_SIZE, OF_OBVIOUS_MASK, FLAG_END);
/* learn the ego on any obvious brand or slay */
if (EASY_LEARN && ego_item_p(o_ptr) && obvious &&
flags_test(f, OF_SIZE, OF_ALL_SLAY_MASK, FLAG_END))
object_notice_ego(o_ptr);
/* Remember the flags */
object_notice_sensing(o_ptr);
/* XXX Eddie should we check_for_ident here? */
}
