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#include "JsonRepository.h"
#include <fstream>
#include <functional>
#include <map>
#include <stdexcept>
#include <string>
#include <nlohmann/json.hpp>
#include <kurator/universe/NotFound.h>
#include <kurator/universe/ShipType.h>
#include <kurator/universe/TurretType.h>
using json = nlohmann::json;
namespace kurator
{
namespace universe
{
template <typename Type>
void
maybe_to(const json& item, const char* member, Type& output)
{
if (item.contains(member))
item.at(member).get_to(output);
}
void
from_json(const json& item, ShipType& ship)
{
item.at("name").get_to(ship.name);
item.at("base_structure_points").get_to(ship.base_structure_points);
item.at("base_armour_points").get_to(ship.base_armour_points);
item.at("base_shield_points").get_to(ship.base_shield_points);
item.at("max_speed").get_to(ship.max_speed);
maybe_to(item, "base_structure_resists", ship.base_structure_resists);
maybe_to(item, "base_armour_resists", ship.base_armour_resists);
maybe_to(item, "base_shield_resists", ship.base_shield_resists);
}
void
from_json(const json& item, TurretType& turret)
{
item.at("name").get_to(turret.name);
maybe_to(item, "base_damage", turret.base_damage);
maybe_to(item, "rounds", turret.rounds);
maybe_to(item, "rate_of_fire", turret.rate_of_fire);
maybe_to(item, "reload", turret.reload);
maybe_to(item, "optimal_range", turret.optimal_range);
maybe_to(item, "falloff_modifier", turret.falloff_modifier);
maybe_to(item, "falloff_intensity", turret.falloff_intensity);
maybe_to(item, "tracking", turret.tracking);
maybe_to(item, "tracking_factor", turret.tracking_factor);
maybe_to(item, "tracking_exponent", turret.tracking_exponent);
}
template<typename Type>
std::map<std::string, Type>
parse(const std::string& path)
try {
std::fstream file{path, file.binary | file.in}; // std::filesystem?
if (!file.is_open())
throw "could not load universe part"; // FIXME: proper errors and handling above
std::map<std::string, Type> map;
const auto root = json::parse(file);
for (const auto& item : root) {
auto def = item.get<Type>();
map[def.name] = def;
}
return map;
}
catch (const json::parse_error&) {
throw;
}
JsonRepository::JsonRepository(const std::string& path)
{
ships = parse<ShipType>(path + "/ship_types.json");
turrets = parse<TurretType>(path + "/turret_types.json");
}
ShipType
JsonRepository::ship_type() const
{
const auto it = ships.begin();
if (it == ships.end())
throw NotFound("any/default");
return it->second;
}
ShipType
JsonRepository::ship_type(const std::string& id) const
try {
return ships.at(id);
}
catch (const std::out_of_range&) {
throw NotFound(id);
}
TurretType
JsonRepository::turret_type() const
{
const auto it = turrets.begin();
if (it == turrets.end())
throw NotFound("any/default");
return it->second;
}
TurretType
JsonRepository::turret_type(const std::string& id) const
try {
return turrets.at(id);
}
catch (const std::out_of_range&) {
throw NotFound(id);
}
void
JsonRepository::for_ship_types(std::function<void(const ShipType&)> func) const
{
for (const auto& [_, type] : ships)
func(type);
}
void
JsonRepository::for_turret_types(std::function<void(const TurretType&)> func) const
{
for (const auto& [_, type] : turrets)
func(type);
}
} // namespace universe
} // namespace kurator
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