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/*
* Copyright (C) 2023-2025 by the Widelands Development Team
*
* 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; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
*
*/
#include "economy/soldier_request.h"
#include <memory>
#include "io/fileread.h"
#include "io/filewrite.h"
#include "logic/game_data_error.h"
#include "logic/map_objects/tribes/requirements.h"
#include "logic/map_objects/tribes/soldier.h"
#include "logic/player.h"
namespace Widelands {
void SoldierRequest::create_request() {
request_.reset(new Request(target_, target_.owner().tribe().soldier(), callback_, wwWORKER));
request_->set_exact_match(true);
}
void SoldierRequest::set_economy(Economy* const e, WareWorker type) {
if (type == wwWORKER && request_ != nullptr) {
request_->set_economy(e);
}
}
void SoldierRequest::update() {
const Quantity target = get_desired_capacity_();
const std::vector<Soldier*> stationed = get_stationed_soldiers_();
const Quantity current = stationed.size();
if (current > target) {
// Site needs to drop soldiers, request nothing.
request_.reset();
return;
}
if (current < target) {
// Site needs more soldiers, request anything.
if (request_ == nullptr) {
create_request();
}
request_->set_requirements(Requirements());
request_->set_count(target - current);
if (Economy* economy = request_->get_economy(); economy != nullptr) {
economy->rebalance_supply();
}
return;
}
// Exchange soldiers, but only one at a time.
if (current < 1) {
request_.reset();
return;
}
const SoldierDescr* descr = dynamic_cast<const SoldierDescr*>(
target_.owner().egbase().descriptions().get_worker_descr(target_.owner().tribe().soldier()));
const int16_t max_level = descr->get_max_total_level();
int16_t rmin = 0;
int16_t rmax = max_level;
switch (preference_) {
case SoldierPreference::kAny:
// No exchange desired
request_.reset();
return;
case SoldierPreference::kHeroes: {
int16_t worst_soldier = max_level;
for (Soldier* soldier : stationed) {
worst_soldier = std::min<int16_t>(worst_soldier, soldier->get_total_level());
}
rmin = worst_soldier + 1;
break;
}
case SoldierPreference::kRookies: {
int16_t best_soldier = 0;
for (Soldier* soldier : stationed) {
best_soldier = std::max<int16_t>(best_soldier, soldier->get_total_level());
}
rmax = best_soldier - 1;
break;
}
default:
NEVER_HERE();
}
if (rmax < rmin || rmin > max_level || rmax < 0) {
// Soldier request is already saturated with all-optimal fits.
request_.reset();
return;
}
if (request_ == nullptr) {
create_request();
}
request_->set_count(1);
request_->set_requirements(RequireAttribute(TrainingAttribute::kTotal, rmin, rmax));
if (Economy* economy = request_->get_economy(); economy != nullptr) {
economy->rebalance_supply();
}
}
constexpr uint16_t kCurrentPacketVersion = 1;
void SoldierRequest::read(FileRead& fr, Game& game, MapObjectLoader& mol) {
try {
const uint16_t packet_version = fr.unsigned_16();
if (packet_version == kCurrentPacketVersion) {
preference_ = static_cast<SoldierPreference>(fr.unsigned_8());
if (fr.unsigned_8() != 0) {
create_request();
request_->read(fr, game, mol);
}
} else {
throw UnhandledVersionError("SoldierRequest", packet_version, kCurrentPacketVersion);
}
} catch (const WException& e) {
throw wexception("soldier request: %s", e.what());
}
}
void SoldierRequest::write(FileWrite& fw, Game& game, MapObjectSaver& mos) const {
fw.unsigned_16(kCurrentPacketVersion);
fw.unsigned_8(static_cast<uint8_t>(preference_));
if (request_ == nullptr) {
fw.unsigned_8(0);
} else {
fw.unsigned_8(1);
request_->write(fw, game, mos);
}
}
} // namespace Widelands
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