battle_context_unit_stats::battle_context_unit_stats(const unit &u,
const map_location& u_loc, int u_attack_num, bool attacking,
const unit &opp, const map_location& opp_loc,
const attack_type *opp_weapon, const unit_map& units) :
weapon(NULL),
attack_num(u_attack_num),
is_attacker(attacking),
is_poisoned(u.get_state(unit::STATE_POISONED)),
is_slowed(u.get_state(unit::STATE_SLOWED)),
slows(false),
drains(false),
petrifies(false),
plagues(false),
poisons(false),
backstab_pos(false),
swarm(false),
firststrike(false),
experience(u.experience()),
max_experience(u.max_experience()),
level(u.level()),
rounds(1),
hp(0),
max_hp(u.max_hitpoints()),
chance_to_hit(0),
damage(0),
slow_damage(0),
drain_percent(0),
drain_constant(0),
num_blows(0),
swarm_min(0),
swarm_max(0),
plague_type()
{
// Get the current state of the unit.
if (attack_num >= 0) {
weapon = &u.attacks()[attack_num];
}
if(u.hitpoints() < 0) {
LOG_CF << "Unit with " << u.hitpoints() << " hitpoints found, set to 0 for damage calculations\n";
hp = 0;
} else if(u.hitpoints() > u.max_hitpoints()) {
// If a unit has more hp than its maximum, the engine will fail
// with an assertion failure due to accessing the prob_matrix
// out of bounds.
hp = u.max_hitpoints();
} else {
hp = u.hitpoints();
}
// Get the weapon characteristics, if any.
if (weapon) {
weapon->set_specials_context(u_loc, opp_loc, attacking, opp_weapon);
if (opp_weapon)
opp_weapon->set_specials_context(opp_loc, u_loc, !attacking, weapon);
slows = weapon->get_special_bool("slow");
drains = !opp.get_state("undrainable") && weapon->get_special_bool("drains");
petrifies = weapon->get_special_bool("petrifies");
poisons = !opp.get_state("unpoisonable") && weapon->get_special_bool("poison") && !opp.get_state(unit::STATE_POISONED);
backstab_pos = is_attacker && backstab_check(u_loc, opp_loc, units, *resources::teams);
rounds = weapon->get_specials("berserk").highest("value", 1).first;
firststrike = weapon->get_special_bool("firststrike");
// Handle plague.
unit_ability_list plague_specials = weapon->get_specials("plague");
plagues = !opp.get_state("unplagueable") && !plague_specials.empty() &&
strcmp(opp.undead_variation().c_str(), "null") && !resources::game_map->is_village(opp_loc);
if (plagues) {
plague_type = (*plague_specials.front().first)["type"].str();
if (plague_type.empty())
plague_type = u.type().base_id();
}
// Compute chance to hit.
chance_to_hit = opp.defense_modifier(
resources::game_map->get_terrain(opp_loc)) + weapon->accuracy() -
(opp_weapon ? opp_weapon->parry() : 0);
if(chance_to_hit > 100) {
chance_to_hit = 100;
}
unit_ability_list cth_specials = weapon->get_specials("chance_to_hit");
unit_abilities::effect cth_effects(cth_specials, chance_to_hit, backstab_pos);
chance_to_hit = cth_effects.get_composite_value();
// Compute base damage done with the weapon.
int base_damage = weapon->modified_damage(backstab_pos);
// Get the damage multiplier applied to the base damage of the weapon.
int damage_multiplier = 100;
// Time of day bonus.
damage_multiplier += combat_modifier(u_loc, u.alignment(), u.is_fearless());
// Leadership bonus.
int leader_bonus = 0;
if (under_leadership(units, u_loc, &leader_bonus).valid())
damage_multiplier += leader_bonus;
// Resistance modifier.
damage_multiplier *= opp.damage_from(*weapon, !attacking, opp_loc);
// Compute both the normal and slowed damage.
damage = round_damage(base_damage, damage_multiplier, 10000);
slow_damage = round_damage(base_damage, damage_multiplier, 20000);
if (is_slowed)
damage = slow_damage;
// Compute drain amounts only if draining is possible.
if(drains) {
unit_ability_list drain_specials = weapon->get_specials("drains");
// Compute the drain percent (with 50% as the base for backward compatibility)
unit_abilities::effect drain_percent_effects(drain_specials, 50, backstab_pos);
drain_percent = drain_percent_effects.get_composite_value();
}
// Add heal_on_hit (the drain constant)
unit_ability_list heal_on_hit_specials = weapon->get_specials("heal_on_hit");
unit_abilities::effect heal_on_hit_effects(heal_on_hit_specials, 0, backstab_pos);
drain_constant += heal_on_hit_effects.get_composite_value();
drains = drain_constant || drain_percent;
// Compute the number of blows and handle swarm.
weapon->modified_attacks(backstab_pos, swarm_min, swarm_max);
swarm = swarm_min != swarm_max;
num_blows = calc_blows(hp);
}
}
/*
* Describe combat advantages.
*/
static bool describe_combat(textblock *tb, const object_type *o_ptr,
oinfo_detail_t mode)
{
bool full = mode & OINFO_FULL;
const char *desc[SL_MAX] = { 0 };
int i;
int mult[SL_MAX];
int cnt, dam, total_dam, plus = 0;
int xtra_postcrit = 0, xtra_precrit = 0;
int crit_mult, crit_div, crit_add;
int str_plus, dex_plus, old_blows = 0, new_blows, extra_blows;
int str_faster = -1, str_done = -1;
object_type *bow = &p_ptr->inventory[INVEN_BOW];
bitflag f[OF_SIZE], tmp_f[OF_SIZE], mask[OF_SIZE];
bool weapon = (wield_slot(o_ptr) == INVEN_WIELD);
bool ammo = (p_ptr->state.ammo_tval == o_ptr->tval) &&
(bow->kind);
int multiplier = 1;
/* Create the "all slays" mask */
create_mask(mask, FALSE, OFT_SLAY, OFT_KILL, OFT_BRAND, OFT_MAX);
/* Abort if we've nothing to say */
if (mode & OINFO_DUMMY) return FALSE;
if (!weapon && !ammo)
{
/* Potions can have special text */
if (o_ptr->tval != TV_POTION ||
o_ptr->dd == 0 || o_ptr->ds == 0 ||
!object_flavor_is_aware(o_ptr))
return FALSE;
textblock_append(tb, "It can be thrown at creatures with damaging effect.\n");
return TRUE;
}
if (full) {
object_flags(o_ptr, f);
} else {
object_flags_known(o_ptr, f);
}
textblock_append_c(tb, TERM_L_WHITE, "Combat info:\n");
if (weapon)
{
/*
* Get the player's hypothetical state, were they to be
* wielding this item.
*/
player_state state;
int dex_plus_bound;
int str_plus_bound;
object_type inven[INVEN_TOTAL];
memcpy(inven, p_ptr->inventory, INVEN_TOTAL * sizeof(object_type));
inven[INVEN_WIELD] = *o_ptr;
if (full) object_know_all_flags(&inven[INVEN_WIELD]);
calc_bonuses(inven, &state, TRUE);
dex_plus_bound = STAT_RANGE - state.stat_ind[A_DEX];
str_plus_bound = STAT_RANGE - state.stat_ind[A_STR];
dam = ((o_ptr->ds + 1) * o_ptr->dd * 5);
xtra_postcrit = state.dis_to_d * 10;
if (object_attack_plusses_are_visible(o_ptr))
{
xtra_precrit += o_ptr->to_d * 10;
plus += o_ptr->to_h;
}
calculate_melee_crits(&state, o_ptr->weight, plus,
&crit_mult, &crit_add, &crit_div);
/* Warn about heavy weapons */
if (adj_str_hold[state.stat_ind[A_STR]] < o_ptr->weight / 10)
textblock_append_c(tb, TERM_L_RED, "You are too weak to use this weapon.\n");
textblock_append_c(tb, TERM_L_GREEN, "%d.%d ",
state.num_blows / 100, (state.num_blows / 10) % 10);
textblock_append(tb, "blow%s/round.\n",
(state.num_blows > 100) ? "s" : "");
/* Check to see if extra STR or DEX would yield extra blows */
old_blows = state.num_blows;
extra_blows = 0;
/* First we need to look for extra blows on other items, as
* state does not track these */
for (i = INVEN_BOW; i < INVEN_TOTAL; i++)
{
if (!p_ptr->inventory[i].kind)
continue;
object_flags_known(&p_ptr->inventory[i], tmp_f);
if (of_has(tmp_f, OF_BLOWS))
extra_blows += p_ptr->inventory[i].pval[which_pval(&p_ptr->inventory[i], OF_BLOWS)];
}
/* Then we add blows from the weapon being examined */
if (of_has(f, OF_BLOWS))
extra_blows += o_ptr->pval[which_pval(o_ptr, OF_BLOWS)];
/* Then we check for extra "real" blows */
for (dex_plus = 0; dex_plus < dex_plus_bound; dex_plus++)
{
for (str_plus = 0; str_plus < str_plus_bound; str_plus++)
{
state.stat_ind[A_STR] += str_plus;
state.stat_ind[A_DEX] += dex_plus;
new_blows = calc_blows(o_ptr, &state, extra_blows);
/* Test to make sure that this extra blow is a
* new str/dex combination, not a repeat
*/
if ((new_blows - new_blows % 10) > (old_blows - old_blows % 10) &&
(str_plus < str_done ||
str_done == -1))
{
textblock_append(tb, "With +%d STR and +%d DEX you would get %d.%d blows\n",
str_plus, dex_plus, (new_blows / 100),
(new_blows / 10) % 10);
state.stat_ind[A_STR] -= str_plus;
state.stat_ind[A_DEX] -= dex_plus;
str_done = str_plus;
break;
}
/* If the combination doesn't increment
* the displayed blows number, it might still
* take a little less energy
*/
if (new_blows > old_blows &&
(str_plus < str_faster ||
str_faster == -1) &&
(str_plus < str_done ||
str_done == -1))
{
textblock_append(tb, "With +%d STR and +%d DEX you would attack a bit faster\n",
str_plus, dex_plus);
state.stat_ind[A_STR] -= str_plus;
state.stat_ind[A_DEX] -= dex_plus;
str_faster = str_plus;
continue;
}
state.stat_ind[A_STR] -= str_plus;
state.stat_ind[A_DEX] -= dex_plus;
}
}
}
else
{
int tdis = 6 + 2 * p_ptr->state.ammo_mult;
if (object_attack_plusses_are_visible(o_ptr))
plus += o_ptr->to_h;
calculate_missile_crits(&p_ptr->state, o_ptr->weight, plus,
&crit_mult, &crit_add, &crit_div);
/* Calculate damage */
dam = ((o_ptr->ds + 1) * o_ptr->dd * 5);
if (object_attack_plusses_are_visible(o_ptr))
dam += (o_ptr->to_d * 10);
if (object_attack_plusses_are_visible(bow))
dam += (bow->to_d * 10);
/* Apply brands/slays from the shooter to the ammo, but only if known
* Note that this is not dependent on mode, so that viewing shop-held
* ammo (fully known) does not leak information about launcher */
object_flags_known(bow, tmp_f);
of_union(f, tmp_f);
textblock_append(tb, "Hits targets up to ");
textblock_append_c(tb, TERM_L_GREEN, format("%d", tdis * 10));
textblock_append(tb, " feet away.\n");
}
/* Collect slays */
/* Melee weapons get slays and brands from other items now */
if (weapon)
{
bool nonweap = FALSE;
for (i = INVEN_LEFT; i < INVEN_TOTAL; i++)
{
if (!p_ptr->inventory[i].kind)
continue;
object_flags_known(&p_ptr->inventory[i], tmp_f);
of_inter(tmp_f, mask); /* strip out non-slays */
if (of_union(f, tmp_f))
nonweap = TRUE;
}
if (nonweap)
textblock_append(tb, "This weapon may benefit from one or more off-weapon brands or slays.\n");
}
textblock_append(tb, "Average damage/round: ");
if (ammo) multiplier = p_ptr->state.ammo_mult;
cnt = list_slays(f, mask, desc, NULL, mult, TRUE);
for (i = 0; i < cnt; i++)
{
int melee_adj_mult = ammo ? 0 : 1; /* ammo mult adds fully, melee mult is times 1, so adds 1 less */
/* Include bonus damage and slay in stated average */
total_dam = dam * (multiplier + mult[i] - melee_adj_mult) + xtra_precrit;
total_dam = (total_dam * crit_mult + crit_add) / crit_div;
total_dam += xtra_postcrit;
if (weapon)
total_dam = (total_dam * old_blows) / 100;
else
total_dam *= p_ptr->state.num_shots;
if (total_dam <= 0)
textblock_append_c(tb, TERM_L_RED, "%d", 0);
else if (total_dam % 10)
textblock_append_c(tb, TERM_L_GREEN, "%d.%d",
total_dam / 10, total_dam % 10);
else
textblock_append_c(tb, TERM_L_GREEN, "%d", total_dam / 10);
textblock_append(tb, " vs. %s, ", desc[i]);
}
if (cnt) textblock_append(tb, "and ");
/* Include bonus damage in stated average */
total_dam = dam * multiplier + xtra_precrit;
total_dam = (total_dam * crit_mult + crit_add) / crit_div;
total_dam += xtra_postcrit;
if (weapon)
total_dam = (total_dam * old_blows) / 100;
else
total_dam *= p_ptr->state.num_shots;
if (total_dam <= 0)
textblock_append_c(tb, TERM_L_RED, "%d", 0);
else if (total_dam % 10)
textblock_append_c(tb, TERM_L_GREEN, "%d.%d",
total_dam / 10, total_dam % 10);
else
textblock_append_c(tb, TERM_L_GREEN, "%d", total_dam / 10);
if (cnt) textblock_append(tb, " vs. others");
textblock_append(tb, ".\n");
/* Note the impact flag */
if (of_has(f, OF_IMPACT))
textblock_append(tb, "Sometimes creates earthquakes on impact.\n");
/* Add breakage chance */
if (ammo)
{
int chance = breakage_chance(o_ptr, TRUE);
textblock_append_c(tb, TERM_L_GREEN, "%d%%", chance);
textblock_append(tb, " chance of breaking upon contact.\n");
}
/* You always have something to say... */
return TRUE;
}
/*
* Describe blows.
*/
static bool describe_blows(textblock *tb, const object_type *o_ptr,
player_state state, bitflag f[OF_SIZE])
{
int str_plus, dex_plus, old_blows = 0, new_blows, extra_blows;
int str_faster = -1, str_done = -1;
int dex_plus_bound;
int str_plus_bound;
int i;
bitflag tmp_f[OF_SIZE];
dex_plus_bound = STAT_RANGE - state.stat_ind[A_DEX];
str_plus_bound = STAT_RANGE - state.stat_ind[A_STR];
/* Write to the text block */
textblock_append_c(tb, TERM_L_GREEN, "%d.%d ",
state.num_blows / 100, (state.num_blows / 10) % 10);
textblock_append(tb, "blow%s/round.\n",
(state.num_blows > 100) ? "s" : "");
/* Check to see if extra STR or DEX would yield extra blows */
old_blows = state.num_blows;
extra_blows = 0;
/* First we need to look for extra blows on other items, as
* state does not track these */
for (i = INVEN_BOW; i < INVEN_TOTAL; i++)
{
if (!p_ptr->inventory[i].kind)
continue;
object_flags_known(&p_ptr->inventory[i], tmp_f);
if (of_has(tmp_f, OF_BLOWS))
extra_blows += p_ptr->inventory[i].pval[which_pval(&p_ptr->inventory[i], OF_BLOWS)];
}
/* Then we add blows from the weapon being examined */
if (of_has(f, OF_BLOWS))
extra_blows += o_ptr->pval[which_pval(o_ptr, OF_BLOWS)];
/* Then we check for extra "real" blows */
for (dex_plus = 0; dex_plus < dex_plus_bound; dex_plus++)
{
for (str_plus = 0; str_plus < str_plus_bound; str_plus++)
{
state.stat_ind[A_STR] += str_plus;
state.stat_ind[A_DEX] += dex_plus;
new_blows = calc_blows(o_ptr, &state, extra_blows);
/* Test to make sure that this extra blow is a
* new str/dex combination, not a repeat
*/
if ((new_blows - new_blows % 10) > (old_blows - old_blows % 10) &&
(str_plus < str_done ||
str_done == -1))
{
textblock_append(tb, "With +%d STR and +%d DEX you would get %d.%d blows\n",
str_plus, dex_plus, (new_blows / 100),
(new_blows / 10) % 10);
state.stat_ind[A_STR] -= str_plus;
state.stat_ind[A_DEX] -= dex_plus;
str_done = str_plus;
break;
}
/* If the combination doesn't increment
* the displayed blows number, it might still
* take a little less energy
*/
if (new_blows > old_blows &&
(str_plus < str_faster ||
str_faster == -1) &&
(str_plus < str_done ||
str_done == -1))
{
textblock_append(tb, "With +%d STR and +%d DEX you would attack a bit faster\n",
str_plus, dex_plus);
state.stat_ind[A_STR] -= str_plus;
state.stat_ind[A_DEX] -= dex_plus;
str_faster = str_plus;
continue;
}
state.stat_ind[A_STR] -= str_plus;
state.stat_ind[A_DEX] -= dex_plus;
}
}
return TRUE;
}
/**
* Gets information about the number of blows possible for the player with
* the given object.
*
* Fills in whether the object is too_heavy to wield effectively,
* and the possible_blows[] information of .str_plus and .dex_plus needed
* to achieve the approximate number of blows in centiblows.
*
* `max_blows` must be at least 1 to hold the current number of blows
* `possible_blows` must be at least [`max_blows`] in size, and will be limited
* to that number of entries. The theoretical maximum is STAT_RANGE * 2 if
* an extra blow/speed boost was given for each combination of STR and DEX.
*
* Returns the number of entries made in the possible_blows[] table, or 0
* if the object is not a weapon.
*
* Note that the results are meaningless if called on a fake ego object as
* the actual ego may have different properties.
*/
static int obj_known_blows(const struct object *obj, int max_num,
struct blow_info possible_blows[])
{
int str_plus, dex_plus, old_blows = 0, new_blows, extra_blows;
int str_faster = -1, str_done = -1;
int dex_plus_bound;
int str_plus_bound;
int i;
struct player_state state;
int weapon_slot = slot_by_name(player, "weapon");
struct object *current_weapon = slot_object(player, weapon_slot);
int num = 0;
/* Not a weapon - no blows! */
if (!tval_is_melee_weapon(obj)) return 0;
/* Pretend we're wielding the object */
player->body.slots[weapon_slot].obj = (struct object *) obj;
/* Calculate the player's hypothetical state */
calc_bonuses(player, &state, true, false);
/* Stop pretending */
player->body.slots[weapon_slot].obj = current_weapon;
/* First entry is always the current num of blows. */
possible_blows[num].str_plus = 0;
possible_blows[num].dex_plus = 0;
possible_blows[num].centiblows = state.num_blows;
num++;
/* Check to see if extra STR or DEX would yield extra blows */
old_blows = state.num_blows;
extra_blows = 0;
/* Start with blows from the weapon being examined */
if (object_this_mod_is_visible(obj, OBJ_MOD_BLOWS))
extra_blows += obj->modifiers[OBJ_MOD_BLOWS];
/* Then we need to look for extra blows on other items, as
* state does not track these */
for (i = 0; i < player->body.count; i++) {
struct object *helper = slot_object(player, i);
if ((i == slot_by_name(player, "weapon")) || !helper || !helper->kind)
continue;
if (object_this_mod_is_visible(helper, OBJ_MOD_BLOWS))
extra_blows += helper->modifiers[OBJ_MOD_BLOWS];
}
dex_plus_bound = STAT_RANGE - state.stat_ind[STAT_DEX];
str_plus_bound = STAT_RANGE - state.stat_ind[STAT_STR];
/* Then we check for extra "real" blows */
for (dex_plus = 0; dex_plus < dex_plus_bound; dex_plus++) {
for (str_plus = 0; str_plus < str_plus_bound; str_plus++) {
if (num == max_num)
return num;
state.stat_ind[STAT_STR] += str_plus;
state.stat_ind[STAT_DEX] += dex_plus;
new_blows = calc_blows(player, obj, &state, extra_blows);
state.stat_ind[STAT_STR] -= str_plus;
state.stat_ind[STAT_DEX] -= dex_plus;
/* Test to make sure that this extra blow is a
* new str/dex combination, not a repeat */
if (((new_blows - new_blows % 10) > (old_blows - old_blows % 10)) &&
(str_plus < str_done || str_done == -1)) {
possible_blows[num].str_plus = str_plus;
possible_blows[num].dex_plus = dex_plus;
possible_blows[num].centiblows = new_blows / 10;
possible_blows[num].centiblows *= 10;
num++;
str_done = str_plus;
break;
}
/* If the combination doesn't increment
* the displayed blows number, it might still
* take a little less energy */
if ((new_blows > old_blows) &&
(str_plus < str_faster || str_faster == -1) &&
(str_plus < str_done || str_done == -1)) {
possible_blows[num].str_plus = str_plus;
possible_blows[num].dex_plus = dex_plus;
possible_blows[num].centiblows = new_blows;
num++;
str_faster = str_plus;
}
}
}
return num;
}
battle_context_unit_stats::battle_context_unit_stats(const unit_type* u_type,
const attack_type* att_weapon, bool attacking,
const unit_type* opp_type,
const attack_type* opp_weapon,
unsigned int opp_terrain_defense,
int lawful_bonus) :
weapon(att_weapon),
attack_num(-2), // This is and stays invalid. Always use weapon, when using this constructor.
is_attacker(attacking),
is_poisoned(false),
is_slowed(false),
slows(false),
drains(false),
petrifies(false),
plagues(false),
poisons(false),
backstab_pos(false),
swarm(false),
firststrike(false),
disable(false),
experience(0),
max_experience(0),
level(0),
rounds(1),
hp(0),
max_hp(0),
chance_to_hit(0),
damage(0),
slow_damage(0),
drain_percent(0),
drain_constant(0),
num_blows(0),
swarm_min(0),
swarm_max(0),
plague_type()
{
if (!u_type || !opp_type) {
return;
}
// Get the current state of the unit.
if (u_type->hitpoints() < 0) {
hp = 0;
} else {
hp = u_type->hitpoints();
}
max_experience = u_type->experience_needed();
level = (u_type->level());
max_hp = (u_type->hitpoints());
// Get the weapon characteristics, if any.
if (weapon) {
weapon->set_specials_context(map_location::null_location(), attacking);
if (opp_weapon) {
opp_weapon->set_specials_context(map_location::null_location(), !attacking);
}
slows = weapon->get_special_bool("slow");
drains = !opp_type->musthave_status("undrainable") && weapon->get_special_bool("drains");
petrifies = weapon->get_special_bool("petrifies");
poisons = !opp_type->musthave_status("unpoisonable") && weapon->get_special_bool("poison");
rounds = weapon->get_specials("berserk").highest("value", 1).first;
firststrike = weapon->get_special_bool("firststrike");
disable = weapon->get_special_bool("disable");
unit_ability_list plague_specials = weapon->get_specials("plague");
plagues = !opp_type->musthave_status("unplagueable") && !plague_specials.empty() &&
strcmp(opp_type->undead_variation().c_str(), "null");
if (plagues) {
plague_type = (*plague_specials.front().first)["type"].str();
if (plague_type.empty()) {
plague_type = u_type->base_id();
}
}
signed int cth = 100 - opp_terrain_defense + weapon->accuracy() -
(opp_weapon ? opp_weapon->parry() : 0);
cth = std::min(100, cth);
cth = std::max(0, cth);
chance_to_hit = cth;
unit_ability_list cth_specials = weapon->get_specials("chance_to_hit");
unit_abilities::effect cth_effects(cth_specials, chance_to_hit, backstab_pos);
chance_to_hit = cth_effects.get_composite_value();
int base_damage = weapon->modified_damage(backstab_pos);
int damage_multiplier = 100;
damage_multiplier += generic_combat_modifier(lawful_bonus, u_type->alignment(),
u_type->musthave_status("fearless"));
damage_multiplier *= opp_type->resistance_against(weapon->type(), !attacking);
damage = round_damage(base_damage, damage_multiplier, 10000);
slow_damage = round_damage(base_damage, damage_multiplier, 20000);
if (drains) {
unit_ability_list drain_specials = weapon->get_specials("drains");
// Compute the drain percent (with 50% as the base for backward compatibility)
unit_abilities::effect drain_percent_effects(drain_specials, 50, backstab_pos);
drain_percent = drain_percent_effects.get_composite_value();
}
// Add heal_on_hit (the drain constant)
unit_ability_list heal_on_hit_specials = weapon->get_specials("heal_on_hit");
unit_abilities::effect heal_on_hit_effects(heal_on_hit_specials, 0, backstab_pos);
drain_constant += heal_on_hit_effects.get_composite_value();
drains = drain_constant || drain_percent;
// Compute the number of blows and handle swarm.
weapon->modified_attacks(backstab_pos, swarm_min, swarm_max);
swarm = swarm_min != swarm_max;
num_blows = calc_blows(hp);
}
}
/*
* Calculate the players current "state", taking into account
* not only race/class intrinsics, but also objects being worn
* and temporary spell effects.
*
* See also calc_mana() and calc_hitpoints().
*
* Take note of the new "speed code", in particular, a very strong
* player will start slowing down as soon as he reaches 150 pounds,
* but not until he reaches 450 pounds will he be half as fast as
* a normal kobold. This both hurts and helps the player, hurts
* because in the old days a player could just avoid 300 pounds,
* and helps because now carrying 300 pounds is not very painful.
*
* The "weapon" and "bow" do *not* add to the bonuses to hit or to
* damage, since that would affect non-combat things. These values
* are actually added in later, at the appropriate place.
*
* If id_only is true, calc_bonuses() will only use the known
* information of objects; thus it returns what the player _knows_
* the character state to be.
*/
void calc_bonuses(object_type inventory[], player_state *state, bool id_only)
{
int i, j, hold;
int extra_blows = 0;
int extra_shots = 0;
int extra_might = 0;
object_type *o_ptr;
bitflag f[OF_SIZE];
bitflag collect_f[OF_SIZE];
/*** Reset ***/
memset(state, 0, sizeof *state);
/* Set various defaults */
state->speed = 110;
state->num_blow = 1;
/*** Extract race/class info ***/
/* Base infravision (purely racial) */
state->see_infra = rp_ptr->infra;
/* Base skills */
for (i = 0; i < SKILL_MAX; i++)
state->skills[i] = rp_ptr->r_skills[i] + cp_ptr->c_skills[i];
/*** Analyze player ***/
/* Extract the player flags */
player_flags(collect_f);
/*** Analyze equipment ***/
/* Scan the equipment */
for (i = INVEN_WIELD; i < INVEN_TOTAL; i++)
{
o_ptr = &inventory[i];
/* Skip non-objects */
if (!o_ptr->k_idx) continue;
/* Extract the item flags */
if (id_only)
object_flags_known(o_ptr, f);
else
object_flags(o_ptr, f);
of_union(collect_f, f);
/* Affect stats */
if (of_has(f, OF_STR)) state->stat_add[A_STR] += o_ptr->pval;
if (of_has(f, OF_INT)) state->stat_add[A_INT] += o_ptr->pval;
if (of_has(f, OF_WIS)) state->stat_add[A_WIS] += o_ptr->pval;
if (of_has(f, OF_DEX)) state->stat_add[A_DEX] += o_ptr->pval;
if (of_has(f, OF_CON)) state->stat_add[A_CON] += o_ptr->pval;
if (of_has(f, OF_CHR)) state->stat_add[A_CHR] += o_ptr->pval;
/* Affect stealth */
if (of_has(f, OF_STEALTH)) state->skills[SKILL_STEALTH] += o_ptr->pval;
/* Affect searching ability (factor of five) */
if (of_has(f, OF_SEARCH)) state->skills[SKILL_SEARCH] += (o_ptr->pval * 5);
/* Affect searching frequency (factor of five) */
if (of_has(f, OF_SEARCH)) state->skills[SKILL_SEARCH_FREQUENCY] += (o_ptr->pval * 5);
/* Affect infravision */
if (of_has(f, OF_INFRA)) state->see_infra += o_ptr->pval;
/* Affect digging (factor of 20) */
if (of_has(f, OF_TUNNEL)) state->skills[SKILL_DIGGING] += (o_ptr->pval * 20);
/* Affect speed */
if (of_has(f, OF_SPEED)) state->speed += o_ptr->pval;
/* Affect blows */
if (of_has(f, OF_BLOWS)) extra_blows += o_ptr->pval;
/* Affect shots */
if (of_has(f, OF_SHOTS)) extra_shots += o_ptr->pval;
/* Affect Might */
if (of_has(f, OF_MIGHT)) extra_might += o_ptr->pval;
/* Modify the base armor class */
state->ac += o_ptr->ac;
/* The base armor class is always known */
state->dis_ac += o_ptr->ac;
/* Apply the bonuses to armor class */
if (!id_only || object_is_known(o_ptr))
state->to_a += o_ptr->to_a;
/* Apply the mental bonuses to armor class, if known */
if (object_defence_plusses_are_visible(o_ptr))
state->dis_to_a += o_ptr->to_a;
/* Hack -- do not apply "weapon" bonuses */
if (i == INVEN_WIELD) continue;
/* Hack -- do not apply "bow" bonuses */
if (i == INVEN_BOW) continue;
/* Apply the bonuses to hit/damage */
if (!id_only || object_is_known(o_ptr))
{
state->to_h += o_ptr->to_h;
state->to_d += o_ptr->to_d;
}
/* Apply the mental bonuses tp hit/damage, if known */
if (object_attack_plusses_are_visible(o_ptr))
{
state->dis_to_h += o_ptr->to_h;
state->dis_to_d += o_ptr->to_d;
}
}
/*** Update all flags ***/
/* Good flags */
if (of_has(collect_f, OF_SLOW_DIGEST)) state->slow_digest = TRUE;
if (of_has(collect_f, OF_FEATHER)) state->ffall = TRUE;
if (of_has(collect_f, OF_REGEN)) state->regenerate = TRUE;
if (of_has(collect_f, OF_TELEPATHY)) state->telepathy = TRUE;
if (of_has(collect_f, OF_SEE_INVIS)) state->see_inv = TRUE;
if (of_has(collect_f, OF_FREE_ACT)) state->free_act = TRUE;
if (of_has(collect_f, OF_HOLD_LIFE)) state->hold_life = TRUE;
/* Weird flags */
if (of_has(collect_f, OF_BLESSED)) state->bless_blade = TRUE;
/* Bad flags */
if (of_has(collect_f, OF_IMPACT)) state->impact = TRUE;
if (of_has(collect_f, OF_AGGRAVATE)) state->aggravate = TRUE;
if (of_has(collect_f, OF_TELEPORT)) state->teleport = TRUE;
if (of_has(collect_f, OF_DRAIN_EXP)) state->exp_drain = TRUE;
if (of_has(collect_f, OF_IMPAIR_HP)) state->impair_hp = TRUE;
if (of_has(collect_f, OF_IMPAIR_MANA)) state->impair_mana = TRUE;
if (of_has(collect_f, OF_AFRAID)) state->afraid = TRUE;
/* Vulnerability flags */
if (of_has(collect_f, OF_VULN_FIRE)) state->vuln_fire = TRUE;
if (of_has(collect_f, OF_VULN_ACID)) state->vuln_acid = TRUE;
if (of_has(collect_f, OF_VULN_COLD)) state->vuln_cold = TRUE;
if (of_has(collect_f, OF_VULN_ELEC)) state->vuln_elec = TRUE;
/* Immunity flags */
if (of_has(collect_f, OF_IM_FIRE)) state->immune_fire = TRUE;
if (of_has(collect_f, OF_IM_ACID)) state->immune_acid = TRUE;
if (of_has(collect_f, OF_IM_COLD)) state->immune_cold = TRUE;
if (of_has(collect_f, OF_IM_ELEC)) state->immune_elec = TRUE;
/* Resistance flags */
if (of_has(collect_f, OF_RES_ACID)) state->resist_acid = TRUE;
if (of_has(collect_f, OF_RES_ELEC)) state->resist_elec = TRUE;
if (of_has(collect_f, OF_RES_FIRE)) state->resist_fire = TRUE;
if (of_has(collect_f, OF_RES_COLD)) state->resist_cold = TRUE;
if (of_has(collect_f, OF_RES_POIS)) state->resist_pois = TRUE;
if (of_has(collect_f, OF_RES_FEAR)) state->resist_fear = TRUE;
if (of_has(collect_f, OF_RES_LIGHT)) state->resist_light = TRUE;
if (of_has(collect_f, OF_RES_DARK)) state->resist_dark = TRUE;
if (of_has(collect_f, OF_RES_BLIND)) state->resist_blind = TRUE;
if (of_has(collect_f, OF_RES_CONFU)) state->resist_confu = TRUE;
if (of_has(collect_f, OF_RES_SOUND)) state->resist_sound = TRUE;
if (of_has(collect_f, OF_RES_SHARD)) state->resist_shard = TRUE;
if (of_has(collect_f, OF_RES_NEXUS)) state->resist_nexus = TRUE;
if (of_has(collect_f, OF_RES_NETHR)) state->resist_nethr = TRUE;
if (of_has(collect_f, OF_RES_CHAOS)) state->resist_chaos = TRUE;
if (of_has(collect_f, OF_RES_DISEN)) state->resist_disen = TRUE;
/* Sustain flags */
if (of_has(collect_f, OF_SUST_STR)) state->sustain_str = TRUE;
if (of_has(collect_f, OF_SUST_INT)) state->sustain_int = TRUE;
if (of_has(collect_f, OF_SUST_WIS)) state->sustain_wis = TRUE;
if (of_has(collect_f, OF_SUST_DEX)) state->sustain_dex = TRUE;
if (of_has(collect_f, OF_SUST_CON)) state->sustain_con = TRUE;
if (of_has(collect_f, OF_SUST_CHR)) state->sustain_chr = TRUE;
/*** Handle stats ***/
/* Calculate stats */
for (i = 0; i < A_MAX; i++)
{
int add, top, use, ind;
/* Extract modifier */
add = state->stat_add[i];
/* Maximize mode */
if (OPT(adult_maximize))
{
/* Modify the stats for race/class */
add += (rp_ptr->r_adj[i] + cp_ptr->c_adj[i]);
}
/* Extract the new "stat_top" value for the stat */
top = modify_stat_value(p_ptr->stat_max[i], add);
/* Save the new value */
state->stat_top[i] = top;
/* Extract the new "stat_use" value for the stat */
use = modify_stat_value(p_ptr->stat_cur[i], add);
/* Save the new value */
state->stat_use[i] = use;
/* Values: n/a */
if (use <= 3) ind = 0;
/* Values: 3, 4, ..., 18 */
else if (use <= 18) ind = (use - 3);
/* Ranges: 18/00-18/09, ..., 18/210-18/219 */
else if (use <= 18+219) ind = (15 + (use - 18) / 10);
/* Range: 18/220+ */
else ind = (37);
assert((0 <= ind) && (ind < STAT_RANGE));
/* Save the new index */
state->stat_ind[i] = ind;
}
/*** Temporary flags ***/
/* Apply temporary "stun" */
if (p_ptr->timed[TMD_STUN] > 50)
{
state->to_h -= 20;
state->dis_to_h -= 20;
state->to_d -= 20;
state->dis_to_d -= 20;
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 8 / 10;
}
else if (p_ptr->timed[TMD_STUN])
{
state->to_h -= 5;
state->dis_to_h -= 5;
state->to_d -= 5;
state->dis_to_d -= 5;
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 9 / 10;
}
/* Invulnerability */
if (p_ptr->timed[TMD_INVULN])
{
state->to_a += 100;
state->dis_to_a += 100;
}
/* Temporary blessing */
if (p_ptr->timed[TMD_BLESSED])
{
state->to_a += 5;
state->dis_to_a += 5;
state->to_h += 10;
state->dis_to_h += 10;
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 105 / 100;
}
/* Temporary shield */
if (p_ptr->timed[TMD_SHIELD])
{
state->to_a += 50;
state->dis_to_a += 50;
}
/* Temporary stoneskin */
if (p_ptr->timed[TMD_STONESKIN])
{
state->to_a += 40;
state->dis_to_a += 40;
state->speed -= 5;
}
/* Temporary "Hero" */
if (p_ptr->timed[TMD_HERO])
{
state->to_h += 12;
state->dis_to_h += 12;
state->resist_fear = TRUE;
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 105 / 100;
}
/* Temporary "Berserk" */
if (p_ptr->timed[TMD_SHERO])
{
state->to_h += 24;
state->dis_to_h += 24;
state->to_a -= 10;
state->dis_to_a -= 10;
state->resist_fear = TRUE;
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 9 / 10;
}
/* Temporary "fast" */
if (p_ptr->timed[TMD_FAST] || p_ptr->timed[TMD_SPRINT])
state->speed += 10;
/* Temporary "slow" */
if (p_ptr->timed[TMD_SLOW])
state->speed -= 10;
/* Temporary see invisible */
if (p_ptr->timed[TMD_SINVIS])
state->see_inv = TRUE;
/* Temporary infravision boost */
if (p_ptr->timed[TMD_SINFRA])
state->see_infra += 5;
/* Temporary telepathy */
if (p_ptr->timed[TMD_TELEPATHY])
state->telepathy = TRUE;
/* Temporary resist confusion */
if (p_ptr->timed[TMD_OPP_CONF])
state->resist_confu = TRUE;
/* Fear */
if (p_ptr->timed[TMD_AFRAID] || p_ptr->timed[TMD_TERROR])
state->afraid = TRUE;
if (p_ptr->timed[TMD_TERROR])
state->speed += 5;
/* Fear can come from item flags too */
if (state->afraid)
{
state->to_h -= 20;
state->dis_to_h -= 20;
state->to_a += 8;
state->dis_to_a += 8;
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 95 / 100;
}
/* Confusion */
if (p_ptr->timed[TMD_CONFUSED])
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 75 / 100;
/* Amnesia */
if (p_ptr->timed[TMD_AMNESIA])
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 8 / 10;
/* Poison */
if (p_ptr->timed[TMD_POISONED])
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 95 / 100;
/* Hallucination */
if (p_ptr->timed[TMD_IMAGE])
state->skills[SKILL_DEVICE] = state->skills[SKILL_DEVICE]
* 8 / 10;
/*** Analyze weight ***/
/* Extract the current weight (in tenth pounds) */
j = p_ptr->total_weight;
/* Extract the "weight limit" (in tenth pounds) */
i = weight_limit(state);
/* Apply "encumbrance" from weight */
if (j > i / 2) state->speed -= ((j - (i / 2)) / (i / 10));
/* Bloating slows the player down (a little) */
if (p_ptr->food >= PY_FOOD_MAX) state->speed -= 10;
/* Searching slows the player down */
if (p_ptr->searching) state->speed -= 10;
/* Sanity check on extreme speeds */
if (state->speed < 0) state->speed = 0;
if (state->speed > 199) state->speed = 199;
/*** Apply modifier bonuses ***/
/* Actual Modifier Bonuses (Un-inflate stat bonuses) */
state->to_a += ((int)(adj_dex_ta[state->stat_ind[A_DEX]]) - 128);
state->to_d += ((int)(adj_str_td[state->stat_ind[A_STR]]) - 128);
state->to_h += ((int)(adj_dex_th[state->stat_ind[A_DEX]]) - 128);
state->to_h += ((int)(adj_str_th[state->stat_ind[A_STR]]) - 128);
/* Displayed Modifier Bonuses (Un-inflate stat bonuses) */
state->dis_to_a += ((int)(adj_dex_ta[state->stat_ind[A_DEX]]) - 128);
state->dis_to_d += ((int)(adj_str_td[state->stat_ind[A_STR]]) - 128);
state->dis_to_h += ((int)(adj_dex_th[state->stat_ind[A_DEX]]) - 128);
state->dis_to_h += ((int)(adj_str_th[state->stat_ind[A_STR]]) - 128);
/*** Modify skills ***/
/* Affect Skill -- stealth (bonus one) */
state->skills[SKILL_STEALTH] += 1;
/* Affect Skill -- disarming (DEX and INT) */
state->skills[SKILL_DISARM] += adj_dex_dis[state->stat_ind[A_DEX]];
state->skills[SKILL_DISARM] += adj_int_dis[state->stat_ind[A_INT]];
/* Affect Skill -- magic devices (INT) */
state->skills[SKILL_DEVICE] += adj_int_dev[state->stat_ind[A_INT]];
/* Affect Skill -- saving throw (WIS) */
state->skills[SKILL_SAVE] += adj_wis_sav[state->stat_ind[A_WIS]];
/* Affect Skill -- digging (STR) */
state->skills[SKILL_DIGGING] += adj_str_dig[state->stat_ind[A_STR]];
/* Affect Skills (Level, by Class) */
for (i = 0; i < SKILL_MAX; i++)
state->skills[i] += (cp_ptr->x_skills[i] * p_ptr->lev / 10);
/* Limit Skill -- digging from 1 up */
if (state->skills[SKILL_DIGGING] < 1) state->skills[SKILL_DIGGING] = 1;
/* Limit Skill -- stealth from 0 to 30 */
if (state->skills[SKILL_STEALTH] > 30) state->skills[SKILL_STEALTH] = 30;
if (state->skills[SKILL_STEALTH] < 0) state->skills[SKILL_STEALTH] = 0;
/* Apply Skill -- Extract noise from stealth */
state->noise = (1L << (30 - state->skills[SKILL_STEALTH]));
/* Obtain the "hold" value */
hold = adj_str_hold[state->stat_ind[A_STR]];
/*** Analyze current bow ***/
/* Examine the "current bow" */
o_ptr = &inventory[INVEN_BOW];
/* Assume not heavy */
state->heavy_shoot = FALSE;
/* It is hard to carholdry a heavy bow */
if (hold < o_ptr->weight / 10)
{
/* Hard to wield a heavy bow */
state->to_h += 2 * (hold - o_ptr->weight / 10);
state->dis_to_h += 2 * (hold - o_ptr->weight / 10);
/* Heavy Bow */
state->heavy_shoot = TRUE;
}
/* Analyze launcher */
if (o_ptr->k_idx)
{
/* Get to shoot */
state->num_fire = 1;
/* Analyze the launcher */
switch (o_ptr->sval)
{
/* Sling and ammo */
case SV_SLING:
{
state->ammo_tval = TV_SHOT;
state->ammo_mult = 2;
break;
}
/* Short Bow and Arrow */
case SV_SHORT_BOW:
{
state->ammo_tval = TV_ARROW;
state->ammo_mult = 2;
break;
}
/* Long Bow and Arrow */
case SV_LONG_BOW:
{
state->ammo_tval = TV_ARROW;
state->ammo_mult = 3;
break;
}
/* Light Crossbow and Bolt */
case SV_LIGHT_XBOW:
{
state->ammo_tval = TV_BOLT;
state->ammo_mult = 3;
break;
}
/* Heavy Crossbow and Bolt */
case SV_HEAVY_XBOW:
{
state->ammo_tval = TV_BOLT;
state->ammo_mult = 4;
break;
}
}
/* Apply special flags */
if (o_ptr->k_idx && !state->heavy_shoot)
{
/* Extra shots */
state->num_fire += extra_shots;
/* Extra might */
state->ammo_mult += extra_might;
/* Hack -- Rangers love Bows */
if (player_has(PF_EXTRA_SHOT) &&
(state->ammo_tval == TV_ARROW))
{
/* Extra shot at level 20 */
if (p_ptr->lev >= 20) state->num_fire++;
/* Extra shot at level 40 */
if (p_ptr->lev >= 40) state->num_fire++;
}
}
/* Require at least one shot */
if (state->num_fire < 1) state->num_fire = 1;
}
/*** Analyze weapon ***/
/* Examine the "current weapon" */
o_ptr = &inventory[INVEN_WIELD];
/* Assume not heavy */
state->heavy_wield = FALSE;
/* It is hard to hold a heavy weapon */
if (hold < o_ptr->weight / 10)
{
/* Hard to wield a heavy weapon */
state->to_h += 2 * (hold - o_ptr->weight / 10);
state->dis_to_h += 2 * (hold - o_ptr->weight / 10);
/* Heavy weapon */
state->heavy_wield = TRUE;
}
/* Non-object means barehanded attacks */
if (!o_ptr->k_idx)
assert(o_ptr->weight == 0);
/* Normal weapons */
if (!state->heavy_wield)
{
/* Calculate number of blows */
state->num_blow = calc_blows(o_ptr, state) + extra_blows;
/* Boost digging skill by weapon weight */
state->skills[SKILL_DIGGING] += (o_ptr->weight / 10);
}
/* Assume okay */
state->icky_wield = FALSE;
/* Priest weapon penalty for non-blessed edged weapons */
if (player_has(PF_BLESS_WEAPON) && (!state->bless_blade) &&
((o_ptr->tval == TV_SWORD) || (o_ptr->tval == TV_POLEARM)))
{
/* Reduce the real bonuses */
state->to_h -= 2;
state->to_d -= 2;
/* Reduce the mental bonuses */
state->dis_to_h -= 2;
state->dis_to_d -= 2;
/* Icky weapon */
state->icky_wield = TRUE;
}
return;
}
