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unit.cpp
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unit.cpp
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/*
Copyright (C) 2003 - 2018 by David White <dave@whitevine.net>
Part of the Battle for Wesnoth Project https://www.wesnoth.org/
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY.
See the COPYING file for more details.
*/
/**
* @file
* Routines to manage units.
*/
#include "units/unit.hpp"
#include "color.hpp"
#include "deprecation.hpp"
#include "display.hpp"
#include "formatter.hpp"
#include "formula/string_utils.hpp" // for VGETTEXT
#include "game_board.hpp" // for game_board
#include "game_config.hpp" // for add_color_info, etc
#include "game_data.hpp"
#include "game_errors.hpp" // for game_error
#include "game_events/manager.hpp" // for add_events
#include "preferences/game.hpp" // for encountered_units
#include "gettext.hpp" // for N_
#include "lexical_cast.hpp"
#include "log.hpp" // for LOG_STREAM, logger, etc
#include "map/map.hpp" // for gamemap
#include "random.hpp" // for generator, rng
#include "resources.hpp" // for units, gameboard, teams, etc
#include "scripting/game_lua_kernel.hpp" // for game_lua_kernel
#include "side_filter.hpp" // for side_filter
#include "synced_context.hpp"
#include "team.hpp" // for team, get_teams, etc
#include "terrain/filter.hpp" // for terrain_filter
#include "units/abilities.hpp" // for effect, filter_base_matches
#include "units/animation.hpp" // for unit_animation
#include "units/animation_component.hpp" // for unit_animation_component
#include "units/filter.hpp"
#include "units/formula_manager.hpp" // for unit_formula_manager
#include "units/id.hpp"
#include "units/map.hpp" // for unit_map, etc
#include "variable.hpp" // for vconfig, etc
#include "game_version.hpp"
#include "utils/functional.hpp"
#include <boost/dynamic_bitset.hpp>
#include <boost/function_output_iterator.hpp>
#ifdef _MSC_VER
#pragma warning (push)
#pragma warning (disable: 4510 4610)
#endif
#include <boost/range/algorithm.hpp>
#ifdef _MSC_VER
#pragma warning (pop)
#endif
#include <cassert> // for assert
#include <cstdlib> // for rand
#include <exception> // for exception
#include <iterator> // for back_insert_iterator, etc
#include <new> // for operator new
#include <ostream> // for operator<<, basic_ostream, etc
namespace t_translation { struct terrain_code; }
static lg::log_domain log_unit("unit");
#define DBG_UT LOG_STREAM(debug, log_unit)
#define LOG_UT LOG_STREAM(info, log_unit)
#define WRN_UT LOG_STREAM(warn, log_unit)
#define ERR_UT LOG_STREAM(err, log_unit)
namespace
{
// "advance" only kept around for backwards compatibility; only "advancement" should be used
const std::array<std::string, 4> ModificationTypes {{ "advancement", "advance", "trait", "object" }};
/**
* Pointers to units which have data in their internal caches. The
* destructor of an unit removes itself from the cache, so the pointers are
* always valid.
*/
static std::vector<const unit*> units_with_cache;
static const std::string leader_crown_path = "misc/leader-crown.png";
static std::string internalized_attrs[] {
"type",
"id",
"name",
"gender",
"random_gender",
"variation",
"role",
"ai_special",
"side",
"underlying_id",
"overlays",
"facing",
"race",
"level",
"recall_cost",
"undead_variation",
"max_attacks",
"attacks_left",
"alpha",
"zoc",
"flying",
"cost",
"max_hitpoints",
"max_moves",
"vision",
"jamming",
"max_experience",
"advances_to",
"hitpoints",
"goto_x",
"goto_y",
"moves",
"experience",
"resting",
"unrenamable",
"alignment",
"canrecruit",
"extra_recruit",
"x",
"y",
"placement",
"parent_type",
"description",
"usage",
"halo",
"ellipse",
"upkeep",
"random_traits",
"generate_name",
"profile",
"small_profile",
"fire_event",
"passable",
"overwrite",
"location_id",
"hidden",
// Useless attributes created when saving units to WML:
"flag_rgb",
"language_name",
"image",
"image_icon"
};
struct internalized_attrs_sorter
{
internalized_attrs_sorter()
{
std::sort(std::begin(internalized_attrs), std::end(internalized_attrs));
}
};
// Sort the array to make set_difference below work.
internalized_attrs_sorter sorter;
void warn_unknown_attribute(const config::const_attr_itors& cfg)
{
config::const_attribute_iterator cur = cfg.begin();
config::const_attribute_iterator end = cfg.end();
const std::string* cur_known = std::begin(internalized_attrs);
const std::string* end_known = std::end(internalized_attrs);
while(cur_known != end_known) {
if(cur == end) {
return;
}
int comp = cur->first.compare(*cur_known);
if(comp < 0) {
WRN_UT << "Unknown attribute '" << cur->first << "' discarded." << std::endl;
++cur;
}
else if(comp == 0) {
++cur;
++cur_known;
}
else {
++cur_known;
}
}
while(cur != end) {
WRN_UT << "Unknown attribute '" << cur->first << "' discarded." << std::endl;
++cur;
}
}
template<typename T>
T* copy_or_null(const std::unique_ptr<T>& ptr)
{
return ptr ? new T(*ptr) : nullptr;
}
} // end anon namespace
/**
* Intrusive Pointer interface
*
**/
void intrusive_ptr_add_ref(const unit* u)
{
assert(u->ref_count_ >= 0);
// the next code line is to notice possible wrongly initialized units.
// The 100000 is picked rather randomly. If you are in the situation
// that you can actually have more then 100000 intrusive_ptr to one unit
// or if you are sure that the refcounting system works
// then feel free to remove the next line
assert(u->ref_count_ < 100000);
if(u->ref_count_ == 0) {
LOG_UT << "Freshly constructed" << std::endl;
}
++(u->ref_count_);
}
void intrusive_ptr_release(const unit* u)
{
assert(u->ref_count_ >= 1);
assert(u->ref_count_ < 100000); //See comment in intrusive_ptr_add_ref
if(--(u->ref_count_) == 0)
{
DBG_UT << "Deleting a unit: id = " << u->id() << ", uid = " << u->underlying_id() << std::endl;
delete u;
}
}
/**
* Converts a string ID to a unit_type.
* Throws a game_error exception if the string does not correspond to a type.
*/
static const unit_type& get_unit_type(const std::string& type_id)
{
if(type_id.empty()) {
throw unit_type::error("creating unit with an empty type field");
}
std::string new_id = type_id;
unit_type::check_id(new_id);
const unit_type* i = unit_types.find(new_id);
if(!i) throw unit_type::error("unknown unit type: " + type_id);
return *i;
}
static unit_race::GENDER generate_gender(const unit_type& type, bool random_gender)
{
const std::vector<unit_race::GENDER>& genders = type.genders();
assert(genders.size() > 0);
if(random_gender == false || genders.size() == 1) {
return genders.front();
} else {
return genders[randomness::generator->get_random_int(0,genders.size()-1)];
// Note: genders is guaranteed to be non-empty, so this is not a
// potential division by zero.
// Note: Whoever wrote this code, you should have used an assertion, to save others hours of work...
// If the assertion size>0 is failing for you, one possible cause is that you are constructing a unit
// from a unit type which has not been ``built'' using the unit_type_data methods.
}
}
static unit_race::GENDER generate_gender(const unit_type& u_type, const config& cfg)
{
const std::string& gender = cfg["gender"];
if(!gender.empty()) {
return string_gender(gender);
}
return generate_gender(u_type, cfg["random_gender"].to_bool());
}
struct ptr_vector_pushback
{
ptr_vector_pushback(boost::ptr_vector<config>& vec) : vec_(&vec) {}
void operator()(const config& cfg)
{
vec_->push_back(new config(cfg));
}
//Don't use reference to be copyable.
boost::ptr_vector<config>* vec_;
};
// Copy constructor
unit::unit(const unit& o)
: ref_count_(0)
, loc_(o.loc_)
, advances_to_(o.advances_to_)
, type_(o.type_)
, type_name_(o.type_name_)
, race_(o.race_)
, id_(o.id_)
, name_(o.name_)
, underlying_id_(o.underlying_id_)
, undead_variation_(o.undead_variation_)
, variation_(o.variation_)
, hit_points_(o.hit_points_)
, max_hit_points_(o.max_hit_points_)
, experience_(o.experience_)
, max_experience_(o.max_experience_)
, level_(o.level_)
, recall_cost_(o.recall_cost_)
, canrecruit_(o.canrecruit_)
, recruit_list_(o.recruit_list_)
, alignment_(o.alignment_)
, flag_rgb_(o.flag_rgb_)
, image_mods_(o.image_mods_)
, unrenamable_(o.unrenamable_)
, side_(o.side_)
, gender_(o.gender_)
, formula_man_(new unit_formula_manager(o.formula_manager()))
, movement_(o.movement_)
, max_movement_(o.max_movement_)
, vision_(o.vision_)
, jamming_(o.jamming_)
, movement_type_(o.movement_type_)
, hold_position_(o.hold_position_)
, end_turn_(o.end_turn_)
, resting_(o.resting_)
, attacks_left_(o.attacks_left_)
, max_attacks_(o.max_attacks_)
, states_(o.states_)
, known_boolean_states_(o.known_boolean_states_)
, variables_(o.variables_)
, events_(o.events_)
, filter_recall_(o.filter_recall_)
, emit_zoc_(o.emit_zoc_)
, overlays_(o.overlays_)
, role_(o.role_)
, attacks_(o.attacks_)
, facing_(o.facing_)
, trait_names_(o.trait_names_)
, trait_descriptions_(o.trait_descriptions_)
, unit_value_(o.unit_value_)
, goto_(o.goto_)
, interrupted_move_(o.interrupted_move_)
, is_fearless_(o.is_fearless_)
, is_healthy_(o.is_healthy_)
, modification_descriptions_(o.modification_descriptions_)
, anim_comp_(new unit_animation_component(*this, *o.anim_comp_))
, hidden_(o.hidden_)
, hp_bar_scaling_(o.hp_bar_scaling_)
, xp_bar_scaling_(o.xp_bar_scaling_)
, modifications_(o.modifications_)
, abilities_(o.abilities_)
, advancements_(o.advancements_)
, description_(o.description_)
, usage_(copy_or_null(o.usage_))
, halo_(copy_or_null(o.halo_))
, ellipse_(copy_or_null(o.ellipse_))
, random_traits_(o.random_traits_)
, generate_name_(o.generate_name_)
, upkeep_(o.upkeep_)
, profile_(o.profile_)
, small_profile_(o.small_profile_)
, changed_attributes_(o.changed_attributes_)
, invisibility_cache_()
{
// Copy the attacks rather than just copying references
for(auto& a : attacks_) {
a.reset(new attack_type(*a));
}
}
unit::unit()
: ref_count_(0)
, loc_()
, advances_to_()
, type_(nullptr)
, type_name_()
, race_(&unit_race::null_race)
, id_()
, name_()
, underlying_id_(0)
, undead_variation_()
, variation_()
, hit_points_(1)
, max_hit_points_(1)
, experience_(0)
, max_experience_(1)
, level_(0)
, recall_cost_(-1)
, canrecruit_(false)
, recruit_list_()
, alignment_()
, flag_rgb_()
, image_mods_()
, unrenamable_(false)
, side_(0)
, gender_(unit_race::NUM_GENDERS)
, formula_man_(new unit_formula_manager())
, movement_(0)
, max_movement_(0)
, vision_(-1)
, jamming_(0)
, movement_type_()
, hold_position_(false)
, end_turn_(false)
, resting_(false)
, attacks_left_(0)
, max_attacks_(0)
, states_()
, known_boolean_states_()
, variables_()
, events_()
, filter_recall_()
, emit_zoc_(0)
, overlays_()
, role_()
, attacks_()
, facing_(map_location::NDIRECTIONS)
, trait_names_()
, trait_descriptions_()
, unit_value_()
, goto_()
, interrupted_move_()
, is_fearless_(false)
, is_healthy_(false)
, modification_descriptions_()
, anim_comp_(new unit_animation_component(*this))
, hidden_(false)
, hp_bar_scaling_(0)
, xp_bar_scaling_(0)
, modifications_()
, abilities_()
, advancements_()
, description_()
, usage_()
, halo_()
, ellipse_()
, random_traits_(true)
, generate_name_(true)
, upkeep_(upkeep_full())
, changed_attributes_(0)
, invisibility_cache_()
{
}
void unit::init(const config& cfg, bool use_traits, const vconfig* vcfg)
{
loc_ = map_location(cfg["x"], cfg["y"], wml_loc());
type_ = &get_unit_type(cfg["parent_type"].blank() ? cfg["type"].str() : cfg["parent_type"].str());
race_ = &unit_race::null_race;
id_ = cfg["id"].str();
name_ = cfg["name"].t_str();
variation_ = cfg["variation"].empty() ? type_->default_variation() : cfg["variation"].str();
canrecruit_ = cfg["canrecruit"].to_bool();
gender_ = generate_gender(*type_, cfg);
role_ = cfg["role"].str();
//, facing_(map_location::NDIRECTIONS)
//, anim_comp_(new unit_animation_component(*this))
hidden_ = cfg["hidden"].to_bool(false);
hp_bar_scaling_ = cfg["hp_bar_scaling"].blank() ? type_->hp_bar_scaling() : cfg["hp_bar_scaling"];
xp_bar_scaling_ = cfg["xp_bar_scaling"].blank() ? type_->xp_bar_scaling() : cfg["xp_bar_scaling"];
random_traits_ = true;
generate_name_ = true;
side_ = cfg["side"].to_int();
if(side_ <= 0) {
side_ = 1;
}
validate_side(side_);
underlying_id_ = n_unit::unit_id(cfg["underlying_id"].to_size_t());
set_underlying_id(resources::gameboard ? resources::gameboard->unit_id_manager() : n_unit::id_manager::global_instance());
if(vcfg) {
const vconfig& filter_recall = vcfg->child("filter_recall");
if(!filter_recall.null())
filter_recall_ = filter_recall.get_config();
const vconfig::child_list& events = vcfg->get_children("event");
for(const vconfig& e : events) {
events_.add_child("event", e.get_config());
}
} else {
filter_recall_ = cfg.child_or_empty("filter_recall");
for(const config& unit_event : cfg.child_range("event")) {
events_.add_child("event", unit_event);
}
}
if(resources::game_events) {
resources::game_events->add_events(events_.child_range("event"));
}
random_traits_ = cfg["random_traits"].to_bool(true);
facing_ = map_location::parse_direction(cfg["facing"]);
if(facing_ == map_location::NDIRECTIONS) facing_ = static_cast<map_location::DIRECTION>(randomness::rng::default_instance().get_random_int(0, map_location::NDIRECTIONS-1));
if(const config& mods = cfg.child("modifications")) {
modifications_ = mods;
}
generate_name_ = cfg["generate_name"].to_bool(true);
// Apply the unit type's data to this unit.
advance_to(*type_, use_traits);
if(const config::attribute_value* v = cfg.get("overlays")) {
auto overlays = utils::parenthetical_split(v->str(), ',');
if(overlays.size() > 0) {
deprecated_message("[unit]overlays", DEP_LEVEL::PREEMPTIVE, {1, 17, 0}, "This warning is only triggered by the cases that *do* still work: setting [unit]overlays= works, but the [unit]overlays attribute will always be empty if WML tries to read it.");
config effect;
config o;
effect["apply_to"] = "overlay";
effect["add"] = v->str();
o.add_child("effect", effect);
add_modification("object", o);
}
}
if(const config& variables = cfg.child("variables")) {
variables_ = variables;
}
if(const config::attribute_value* v = cfg.get("race")) {
if(const unit_race *r = unit_types.find_race(*v)) {
race_ = r;
} else {
race_ = &unit_race::null_race;
}
}
if(const config::attribute_value* v = cfg.get("level")) {
set_level(v->to_int(level_));
}
if(const config::attribute_value* v = cfg.get("undead_variation")) {
set_undead_variation(v->str());
}
if(const config::attribute_value* v = cfg.get("max_attacks")) {
set_max_attacks(std::max(0, v->to_int(1)));
}
if(const config::attribute_value* v = cfg.get("zoc")) {
set_emit_zoc(v->to_bool(level_ > 0));
}
if(const config::attribute_value* v = cfg.get("description")) {
description_ = *v;
}
if(const config::attribute_value* v = cfg.get("cost")) {
unit_value_ = *v;
}
if(const config::attribute_value* v = cfg.get("ellipse")) {
set_image_ellipse(*v);
}
if(const config::attribute_value* v = cfg.get("halo")) {
set_image_halo(*v);
}
if(const config::attribute_value* v = cfg.get("usage")) {
set_usage(*v);
}
if(const config::attribute_value* v = cfg.get("profile")) {
set_big_profile(v->str());
}
if(const config::attribute_value* v = cfg.get("small_profile")) {
set_small_profile(v->str());
}
if(const config::attribute_value* v = cfg.get("max_hitpoints")) {
set_max_hitpoints(std::max(1, v->to_int(max_hit_points_)));
}
if(const config::attribute_value* v = cfg.get("max_moves")) {
set_total_movement(std::max(1, v->to_int(max_movement_)));
}
if(const config::attribute_value* v = cfg.get("max_experience")) {
set_max_experience(std::max(1, v->to_int(max_experience_)));
}
vision_ = cfg["vision"].to_int(vision_);
jamming_ = cfg["jamming"].to_int(jamming_);
advances_to_t temp_advances = utils::split(cfg["advances_to"]);
if(temp_advances.size() == 1 && temp_advances.front() == "null") {
set_advances_to(advances_to_t());
} else if(temp_advances.size() >= 1 && !temp_advances.front().empty()) {
set_advances_to(temp_advances);
}
if(const config& ai = cfg.child("ai")) {
formula_man_->read(ai);
}
// Don't use the unit_type's attacks if this config has its own defined
if(config::const_child_itors cfg_range = cfg.child_range("attack")) {
set_attr_changed(UA_ATTACKS);
attacks_.clear();
for(const config& c : cfg_range) {
attacks_.emplace_back(new attack_type(c));
}
}
// If cfg specifies [advancement]s, replace this [advancement]s with them.
if(cfg.has_child("advancement")) {
set_attr_changed(UA_ADVANCEMENTS);
this->advancements_.clear();
boost::copy(cfg.child_range("advancement"), boost::make_function_output_iterator(ptr_vector_pushback(advancements_)));
}
// Don't use the unit_type's abilities if this config has its own defined
// Why do we allow multiple [abilities] tags?
if(config::const_child_itors cfg_range = cfg.child_range("abilities")) {
set_attr_changed(UA_ABILITIES);
abilities_.clear();
for(const config& abilities : cfg_range) {
this->abilities_.append(abilities);
}
}
if(const config::attribute_value* v = cfg.get("alignment")) {
set_attr_changed(UA_ALIGNMENT);
alignment_.parse(v->str());
}
// Adjust the unit's defense, movement, vision, jamming, resistances, and
// flying status if this config has its own defined.
if(cfg.has_child("movement_costs")
|| cfg.has_child("vision_costs")
|| cfg.has_child("jamming_costs")
|| cfg.has_child("defense")
|| cfg.has_child("resistance")
|| cfg.has_attribute("flying"))
{
set_attr_changed(UA_MOVEMENT_TYPE);
}
movement_type_.merge(cfg);
if(const config& status_flags = cfg.child("status")) {
for(const config::attribute &st : status_flags.attribute_range()) {
if(st.second.to_bool()) {
set_state(st.first, true);
}
}
}
if(cfg["ai_special"] == "guardian") {
set_state(STATE_GUARDIAN, true);
}
if(const config::attribute_value* v = cfg.get("invulnerable")) {
set_state("invulnerable", v->to_bool());
}
goto_.set_wml_x(cfg["goto_x"].to_int());
goto_.set_wml_y(cfg["goto_y"].to_int());
attacks_left_ = std::max(0, cfg["attacks_left"].to_int(max_attacks_));
movement_ = std::max(0, cfg["moves"].to_int(max_movement_));
// we allow negative hitpoints, one of the reasons is that a unit
// might be stored+unstored during a attack related event before it
// dies when it has negative hp and when dont want the event to
// change the unit hp when it was not intended.
hit_points_ = cfg["hitpoints"].to_int(max_hit_points_);
experience_ = cfg["experience"];
resting_ = cfg["resting"].to_bool();
unrenamable_ = cfg["unrenamable"].to_bool();
// We need to check to make sure that the cfg is not blank and if it
// isn't pull that value otherwise it goes with the default of -1.
if(!cfg["recall_cost"].blank()) {
recall_cost_ = cfg["recall_cost"].to_int(recall_cost_);
}
generate_name();
parse_upkeep(cfg["upkeep"]);
set_recruits(utils::split(cfg["extra_recruit"]));
game_config::add_color_info(cfg);
warn_unknown_attribute(cfg.attribute_range());
#if 0
// Debug unit animations for units as they appear in game
for(const auto& anim : anim_comp_->animations_) {
std::cout << anim.debug() << std::endl;
}
#endif
}
void unit::clear_status_caches()
{
for(auto& u : units_with_cache) {
u->clear_visibility_cache();
}
units_with_cache.clear();
}
void unit::init(const unit_type& u_type, int side, bool real_unit, unit_race::GENDER gender)
{
type_ = &u_type;
race_ = &unit_race::null_race;
variation_ = type_->default_variation();
side_ = side;
gender_ = gender != unit_race::NUM_GENDERS ? gender : generate_gender(u_type, real_unit);
facing_ = static_cast<map_location::DIRECTION>(randomness::rng::default_instance().get_random_int(0, map_location::NDIRECTIONS-1));
upkeep_ = upkeep_full();
// Apply the unit type's data to this unit.
advance_to(u_type, real_unit);
if(real_unit) {
generate_name();
}
set_underlying_id(resources::gameboard ? resources::gameboard->unit_id_manager() : n_unit::id_manager::global_instance());
// Set these after traits and modifications have set the maximums.
movement_ = max_movement_;
hit_points_ = max_hit_points_;
attacks_left_ = max_attacks_;
}
unit::~unit()
{
try {
anim_comp_->clear_haloes();
// Remove us from the status cache
auto itor = std::find(units_with_cache.begin(), units_with_cache.end(), this);
if(itor != units_with_cache.end()) {
units_with_cache.erase(itor);
}
} catch(const std::exception & e) {
ERR_UT << "Caught exception when destroying unit: " << e.what() << std::endl;
} catch(...) {}
}
/**
* Swap, for copy and swap idiom
*/
void unit::swap(unit & o)
{
using std::swap;
// Don't swap reference count, or it will be incorrect...
swap(loc_, o.loc_);
swap(advances_to_, o.advances_to_);
swap(type_, o.type_);
swap(type_name_, o.type_name_);
swap(race_, o.race_);
swap(id_, o.id_);
swap(name_, o.name_);
swap(underlying_id_, o.underlying_id_);
swap(undead_variation_, o.undead_variation_);
swap(variation_, o.variation_);
swap(hit_points_, o.hit_points_);
swap(max_hit_points_, o.max_hit_points_);
swap(experience_, o.experience_);
swap(max_experience_, o.max_experience_);
swap(level_, o.level_);
swap(recall_cost_, o.recall_cost_);
swap(canrecruit_, o.canrecruit_);
swap(recruit_list_, o.recruit_list_);
swap(alignment_, o.alignment_);
swap(flag_rgb_, o.flag_rgb_);
swap(image_mods_, o.image_mods_);
swap(unrenamable_, o.unrenamable_);
swap(side_, o.side_);
swap(gender_, o.gender_);
swap(formula_man_, o.formula_man_);
swap(movement_, o.movement_);
swap(max_movement_, o.max_movement_);
swap(vision_, o.vision_);
swap(jamming_, o.jamming_);
swap(movement_type_, o.movement_type_);
swap(hold_position_, o.hold_position_);
swap(end_turn_, o.end_turn_);
swap(resting_, o.resting_);
swap(attacks_left_, o.attacks_left_);
swap(max_attacks_, o.max_attacks_);
swap(states_, o.states_);
swap(known_boolean_states_, o.known_boolean_states_);
swap(variables_, o.variables_);
swap(events_, o.events_);
swap(filter_recall_, o.filter_recall_);
swap(emit_zoc_, o.emit_zoc_);
swap(overlays_, o.overlays_);
swap(role_, o.role_);
swap(attacks_, o.attacks_);
swap(facing_, o.facing_);
swap(trait_names_, o.trait_names_);
swap(trait_descriptions_, o.trait_descriptions_);
swap(unit_value_, o.unit_value_);
swap(goto_, o.goto_);
swap(interrupted_move_, o.interrupted_move_);
swap(is_fearless_, o.is_fearless_);
swap(is_healthy_, o.is_healthy_);
swap(modification_descriptions_, o.modification_descriptions_);
swap(anim_comp_, o.anim_comp_);
swap(hidden_, o.hidden_);
swap(modifications_, o.modifications_);
swap(invisibility_cache_, o.invisibility_cache_);
}
void unit::generate_name()
{
if(!name_.empty() || !generate_name_) {
return;
}
name_ = race_->generate_name(gender_);
generate_name_ = false;
}
void unit::generate_traits(bool must_have_only)
{
LOG_UT << "Generating a trait for unit type " << type().log_id() << " with must_have_only " << must_have_only << std::endl;
const unit_type& u_type = type();
// Calculate the unit's traits
config::const_child_itors current_traits = modifications_.child_range("trait");
std::vector<const config*> candidate_traits;
for(const config& t : u_type.possible_traits()) {
// Skip the trait if the unit already has it.
const std::string& tid = t["id"];
bool already = false;
for(const config& mod : current_traits) {
if(mod["id"] == tid) {
already = true;
break;
}
}
if(already) {
continue;
}
// Add the trait if it is mandatory.
const std::string& avl = t["availability"];
if(avl == "musthave") {
modifications_.add_child("trait", t);
current_traits = modifications_.child_range("trait");
continue;
}
// The trait is still available, mark it as a candidate for randomizing.
// For leaders, only traits with availability "any" are considered.
if(!must_have_only && (!can_recruit() || avl == "any")) {
candidate_traits.push_back(&t);
}
}
if(must_have_only) return;
// Now randomly fill out to the number of traits required or until
// there aren't any more traits.
int nb_traits = current_traits.size();
int max_traits = u_type.num_traits();
for(; nb_traits < max_traits && !candidate_traits.empty(); ++nb_traits)
{
int num = randomness::generator->get_random_int(0,candidate_traits.size()-1);
modifications_.add_child("trait", *candidate_traits[num]);
candidate_traits.erase(candidate_traits.begin() + num);
}
// Once random traits are added, don't do it again.
// Such as when restoring a saved character.
random_traits_ = false;
}
std::vector<std::string> unit::get_traits_list() const
{
std::vector<std::string> res;
for(const config& mod : modifications_.child_range("trait"))
{
// Make sure to return empty id trait strings as otherwise
// names will not match in length (Bug #21967)
res.push_back(mod["id"]);
}
return res;
}
/**
* Advances this unit to the specified type.
* Experience is left unchanged.
* Current hit point total is left unchanged unless it would violate max HP.
* Assumes gender_ and variation_ are set to their correct values.
*/
void unit::advance_to(const unit_type& u_type, bool use_traits)
{
appearance_changed_ = true;
// For reference, the type before this advancement.
const unit_type& old_type = type();
// Adjust the new type for gender and variation.
const unit_type& new_type = u_type.get_gender_unit_type(gender_).get_variation(variation_);
// Reset the scalar values first
trait_names_.clear();
trait_descriptions_.clear(),
is_fearless_ = false;
is_healthy_ = false;
image_mods_.clear();
overlays_.clear();
// Clear modification-related caches
modification_descriptions_.clear();
// build unit type ready to create units. Not sure if needed.
new_type.get_cfg_for_units();
if(!new_type.usage().empty()) {
set_usage(new_type.usage());
}
set_image_halo(new_type.halo());
if(!new_type.ellipse().empty()) {
set_image_ellipse(new_type.ellipse());
}
generate_name_ &= new_type.generate_name();
abilities_ = new_type.abilities_cfg();
advancements_.clear();
for(const config& advancement : new_type.advancements()) {
advancements_.push_back(new config(advancement));
}
// If unit has specific profile, remember it and keep it after advancing
if(small_profile_.empty() || small_profile_ == old_type.small_profile()) {
small_profile_ = new_type.small_profile();
}
if(profile_.empty() || profile_ == old_type.big_profile()) {
profile_ = new_type.big_profile();
}
// NOTE: There should be no need to access old_cfg (or new_cfg) after this
// line. Particularly since the swap might have affected old_cfg.
advances_to_ = new_type.advances_to();
race_ = new_type.race();
type_ = &new_type;
type_name_ = new_type.type_name();
description_ = new_type.unit_description();
undead_variation_ = new_type.undead_variation();
max_experience_ = new_type.experience_needed(true);
level_ = new_type.level();
recall_cost_ = new_type.recall_cost();
alignment_ = new_type.alignment();
max_hit_points_ = new_type.hitpoints();
hp_bar_scaling_ = new_type.hp_bar_scaling();
xp_bar_scaling_ = new_type.xp_bar_scaling();
max_movement_ = new_type.movement();
vision_ = new_type.vision(true);
jamming_ = new_type.jamming();
movement_type_ = new_type.movement_type();
emit_zoc_ = new_type.has_zoc();
attacks_.clear();
std::transform(new_type.attacks().begin(), new_type.attacks().end(), std::back_inserter(attacks_), [](const attack_type& atk) {
return std::make_shared<attack_type>(atk);
});
unit_value_ = new_type.cost();
max_attacks_ = new_type.max_attacks();
flag_rgb_ = new_type.flag_rgb();
upkeep_ = upkeep_full();
parse_upkeep(new_type.get_cfg()["upkeep"]);
anim_comp_->reset_after_advance(&new_type);
if(random_traits_) {
generate_traits(!use_traits);
} else {
// This will add any "musthave" traits to the new unit that it doesn't already have.
// This covers the Dark Sorcerer advancing to Lich and gaining the "undead" trait,
// but random and/or optional traits are not added,
// and neither are inappropriate traits removed.