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);
}
}
void battle_prediction_pane::get_unit_strings(const battle_context_unit_stats& stats,
const unit& u, const map_location& u_loc, float u_unscathed,
const unit& opp, const map_location& opp_loc, const attack_type *opp_weapon,
std::vector<std::string>& left_strings, std::vector<std::string>& right_strings,
int& left_strings_width, int& right_strings_width, int& strings_width)
{
std::stringstream str;
char str_buf[10];
// With a weapon.
if(stats.weapon != NULL) {
// Set specials context (for safety, it should not have changed normally).
const attack_type *weapon = stats.weapon;
weapon->set_specials_context(u_loc, opp_loc, stats.is_attacker, opp_weapon);
// Get damage modifiers.
unit_ability_list dmg_specials = weapon->get_specials("damage");
unit_abilities::effect dmg_effect(dmg_specials, weapon->damage(), stats.backstab_pos);
// Get the SET damage modifier, if any.
const unit_abilities::individual_effect *set_dmg_effect = NULL;
unit_abilities::effect::const_iterator i;
for(i = dmg_effect.begin(); i != dmg_effect.end(); ++i) {
if(i->type == unit_abilities::SET) {
set_dmg_effect = &*i;
break;
}
}
// Either user the SET modifier or the base weapon damage.
if(set_dmg_effect == NULL) {
left_strings.push_back(weapon->name());
str.str("");
str << weapon->damage();
right_strings.push_back(str.str());
} else {
assert(set_dmg_effect->ability);
left_strings.push_back((*set_dmg_effect->ability)["name"]);
str.str("");
str << set_dmg_effect->value;
right_strings.push_back(str.str());
}
// Process the ADD damage modifiers.
for(i = dmg_effect.begin(); i != dmg_effect.end(); ++i) {
if(i->type == unit_abilities::ADD) {
left_strings.push_back((*i->ability)["name"]);
str.str("");
if(i->value >= 0) str << "+" << i->value;
else str << i->value;
right_strings.push_back(str.str());
}
}
// Process the MUL damage modifiers.
for(i = dmg_effect.begin(); i != dmg_effect.end(); ++i) {
if(i->type == unit_abilities::MUL) {
left_strings.push_back((*i->ability)["name"]);
str.str("");
str << "* " << (i->value / 100);
if(i->value % 100) {
str << "." << ((i->value % 100) / 10);
if(i->value % 10) str << (i->value % 10);
}
right_strings.push_back(str.str());
}
}
// Time of day modifier.
int tod_modifier = combat_modifier(resources::gameboard->units(), resources::gameboard->map(), u_loc, u.alignment(), u.is_fearless());
if(tod_modifier != 0) {
left_strings.push_back(_("Time of day"));
str.str("");
str << utils::signed_percent(tod_modifier);
right_strings.push_back(str.str());
}
// Leadership bonus.
int leadership_bonus = 0;
under_leadership(*resources::units, u_loc, &leadership_bonus);
if(leadership_bonus != 0) {
left_strings.push_back(_("Leadership"));
str.str("");
str << utils::signed_percent(leadership_bonus);
right_strings.push_back(str.str());
}
// Resistance modifier.
int resistance_modifier = opp.damage_from(*weapon, !stats.is_attacker, opp_loc);
if(resistance_modifier != 100) {
str.str("");
if(stats.is_attacker) str << _("Defender");
else str << _("Attacker");
if(resistance_modifier < 100) str << _(" resistance vs ");
else str << _(" vulnerability vs ");
str << string_table["type_" + weapon->type()];
left_strings.push_back(str.str());
str.str("");
str << "* " << (resistance_modifier / 100) << "." << ((resistance_modifier % 100) / 10);
right_strings.push_back(str.str());
}
// Slowed penalty.
if(stats.is_slowed) {
left_strings.push_back(_("Slowed"));
right_strings.push_back("/ 2");
}
// Total damage.
left_strings.push_back(_("Total damage"));
str.str("");
str << stats.damage << utils::unicode_en_dash << stats.num_blows << " (" << stats.chance_to_hit << "%)";
right_strings.push_back(str.str());
// Without a weapon.
} else {
left_strings.push_back(_("No usable weapon"));
right_strings.push_back("");
}
// Unscathed probability.
left_strings.push_back(_("Chance of being unscathed"));
format_prob(str_buf, u_unscathed);
right_strings.push_back(str_buf);
#if 0 // might not be in English!
// Fix capitalization of left strings.
for(int i = 0; i < (int) left_strings.size(); i++)
if(left_strings[i].size() > 0) left_strings[i][0] = toupper(left_strings[i][0]);
#endif
// Compute the width of the strings.
left_strings_width = get_strings_max_length(left_strings);
right_strings_width = get_strings_max_length(right_strings);
strings_width = left_strings_width + inter_column_gap_ + right_strings_width;
}